Skip to main content
Select Source:

P

P, p [Called ‘pee’]. The 16th LETTER of the Roman ALPHABET as used for English. It originated in the Phoenician symbol pe, which was adopted by the Greeks as pi (Π), an earlier form of which the Romans adopted as P.

Sound values

In English, the letter p is normally pronounced as a voiceless bilabial plosive, as in pip. Phonetic variations in English include a less aspirated value after initial s, as in spot, and an unreleased plosive before other consonants, as in slipped (as opposed to the gently released p in slipper). In final position, spoken /p/ may or may not be released: slip, snap.

Double P

(1) Final p is normally single (tap, step, tip, stop, cup, kidnap, worship), the form steppe probably reflecting FRENCH or GERMAN spelling, as the original RUSSIAN has only single p. Monosyllables double the final p after a single short vowel before a suffix beginning with a vowel (stopping, stopper, stopped). Few polysyllables end in p; if they do, the p is generally not doubled before suffixes: galloped, gossiping, syrupy. However, BrE treats kidnap, worship as though based on monosyllables (kidnapped, worshipping), though AmE often follows the polysyllabic pattern (kidnapped, worshiping). (2) The doubling of medial p after stressed simple short vowels is inconsistent, as in the pairs apple/chapel, pepper/leper, copper/proper. In coppice there is doubling, whereas related copse has a single p. (3) When p is preceded by some Latin prefixes, it is doubled because of the assimilation of a consonant, as in apparent (ad-parent), oppose (ob-pose), suppress (sub-press).

Epenthetic P

(1) The nasal equivalent of p is m. The phonetic closeness of the sounds represented by these letters has prompted an epenthetic p after m in empty (earlier emti), and in the variants sempstress/seamstress, Thompson/Thomson, and Hampstead/Hamstead (part of London and part of Birmingham, respectively). (2) Phonetically, there may be the same epenthetic p-quality in dreamt (‘drempt’) as in empty. (3) The p in related forms such as redeem/redemption, consume/consumption has been carried over from Latin etyma. See EPENTHESIS, ETYMON.

PH

(1) The DIGRAPH ph with the value /f/ originated as the Latin transcription of Greek phi (Φ), which originally had the value of a heavily aspirated /p/ (comparable to the sound in uphold). Ph pronounced /f/ occurs almost only in roots of GREEK origin (pharmacy, philosophy, photograph), but has been adopted by analogy in occasional words of non-Greek derivation, such as nephew (compare French neveu, German Neffe), BrE sulphur (compare LATIN and AmE sulfur). The ph in the name Stephen is pronounced /v/ and is alternatively v as in Steven. (2) Ph before th is often pronounced /p/, for example ‘diptheria’ for diphtheria, ‘dipthong’ for diphthong, ‘opthalmic’ for opthalmic, and this leads to spellings without h. See F.

Silent P

(1) Initially, in words of Greek derivation before n (pneumonia), s (psalm), t (pterodactyl), producing combinations that, if pronounced, would be alien to English phonology. Middle English sometimes omitted p in salme, salter, but in Modern English it is seen in psalm, psalter, pseudo-, psittacosis, psoriasis, psyche, Ptolemy, ptomaine, etc. Of GAELIC origin, ptarmigan probably acquired its p by analogy with Greek derivations. (2) Occasionally, as when preceding a syllable beginning with its voiced equivalent b, the sound of p is assimilated, so effectively becoming silent, as in cupboard (‘cubberd’), raspberry (‘razb(e)ry’). (3) The p of receipt is an etymologically motivated insertion and was formerly often also inserted in conceit and deceit, but Samuel JOHNSON kept it only in receipt on grounds of common usage. (4) Silent p occurs in sapphire, whose first p was introduced to MIDDLE ENGLISH safir on etymological grounds. It also occurs in such French loans as corps and coup. (5) Whether p is pronounced after m in, for example, empty, exempt, tempt, prompt, consumption (as well as in dreamt) is unclear; at all events, the preceding bilabial m prepares the lips for p and is released as for /p/ with the following consonant.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." Concise Oxford Companion to the English Language. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." Concise Oxford Companion to the English Language. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/humanities/encyclopedias-almanacs-transcripts-and-maps/p

"P." Concise Oxford Companion to the English Language. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/encyclopedias-almanacs-transcripts-and-maps/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P1 / / (also p) • n. (pl. Ps or P's / pēz/ ) the sixteenth letter of the alphabet. ∎  denoting the next after O (or N if O is omitted) in a set of items, categories, etc. PHRASES: mind one's Ps and Qssee mind. P2 • abbr. ∎  pastor. ∎  father. ∎  (in tables of sports results) games played. ∎  (on an automatic gearshift) park. ∎  (on road signs and street plans) parking. ∎  peseta. ∎  peso. ∎  [in comb.] (in units of measurement) peta- (1015): 27 PBq of radioactive material. ∎  Physics poise (unit of viscosity). ∎  post. ∎  president. ∎  pressure. ∎  priest. ∎  prince. ∎  proprietary. ∎  progressive. • symb. ∎  the chemical element phosphorus.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-2

"P." The Oxford Pocket Dictionary of Current English. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-2

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P 16th letter of the English alphabet and a letter employed in the alphabets of other w European languages. It is a consonant and descends from the Semitic letter pe, a word meaning “mouth”. The letter was modified in shape by the Greeks and taken into their alphabet as pi. The Romans changed the letter's shape further by shortening its right-hand vertical and later curving it to give it the form it has today. In English p normally functions as what phoneticians call a voiceless bilabial plosive or stop consonant, made by allowing the breath to build up behind closed lips to be released sharply as the lips are drawn apart. It is the voiceless counterpart of b. The letter is nearly always sounded, as in pig and top, although it is “silent” in a few Greek-derived words, such as psychology or pneumatic, and in the pseudo-Greek spelling ptarmigan. Combined with h it is pronounced like an f, as in phase and epitaph.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." World Encyclopedia. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." World Encyclopedia. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/p

"P." World Encyclopedia. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

p

p • abbr. ∎  page. ∎  (p-) [in comb.] Chem. para-: p-xylene. ∎ Brit. penny or pence. ∎  Mus. piano (softly). ∎  [in comb.] (in units of measurement) pico- (10−12): a 220 pf capacitor. ∎ Chem. denoting electrons and orbitals possessing one unit of angular momentum. • symb. ∎  Physics pressure. ∎  Statistics probability.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"p." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"p." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-3

"p." The Oxford Pocket Dictionary of Current English. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-3

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P, 16th letter of the alphabet, representing the voiceless bilabial stop. It corresponds to Greek pi, but in form it looks like Greek rho (see R). For the technical use of P in higher criticism, see Old Testament. In chemistry P is the symbol of the element phosphorus.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/p

"P." The Columbia Encyclopedia, 6th ed.. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P (parental generation) The individuals that are selected to begin a breeding experiment, crosses between which yield the F1 generation. Only pure-breeding (homozygous) individuals are selected for the P generation.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Biology. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Biology. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-3

"P." A Dictionary of Biology. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-3

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

p

p. Abbreviation of piano (It., soft), hence pp, ppp, and sometimes even quieter (Verdi optimistically uses pppp in his Requiem, also Elgar in Enigma Variations).

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"p." The Concise Oxford Dictionary of Music. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"p." The Concise Oxford Dictionary of Music. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/p

"p." The Concise Oxford Dictionary of Music. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P the sixteenth letter of the modern English alphabet and the fifteenth of the ancient Roman one, corresponding to Greek pi, Phoenician and Semitic pe.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." The Oxford Dictionary of Phrase and Fable. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p

"P." The Oxford Dictionary of Phrase and Fable. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P symbol for
1. phosphorus.

2. (in statistics) probability (see significance).

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Nursing. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Nursing. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/p

"P." A Dictionary of Nursing. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Plant Sciences. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Plant Sciences. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-1

"P." A Dictionary of Plant Sciences. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-1

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Zoology. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Zoology. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-2

"P." A Dictionary of Zoology. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-2

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Computing. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Computing. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/p

"P." A Dictionary of Computing. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/computing/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P. See chrismon.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Architecture and Landscape Architecture. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/p

"P." A Dictionary of Architecture and Landscape Architecture. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P See phosphorus.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Ecology. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Ecology. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p

"P." A Dictionary of Ecology. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

P

P See PHOSPHORUS.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"P." A Dictionary of Plant Sciences. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"P." A Dictionary of Plant Sciences. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-0

"P." A Dictionary of Plant Sciences. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/p-0

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.

p

p (bold ital.) Physics, symbol for electric dipole moment
• (ital.) Physics, symbol for momentum (bold ital. in vector equations)
• (ital.) Chem. para (as in p-cresol)
• symbol for penny (or pence)
• (bold ital.) Chem., symbol for permanent dipole moment of a molecule
• Biochem., symbol for (terminal) phosphate (in a polynucleotide)
• (ital.) Music piano (Italian; softly, quietly)
• symbol for pico- (prefix indicating 10−9 as in ps, picosecond)
• (ital.) Physics, symbol for pressure
• Physics, symbol for proton
• Electronics p-type (semiconductor)
• (ital.) Biochem., symbol for pyranose
• Meteorol., symbol for shower
• Physics, Chem., indicating the electron state l=1 (where l is orbital angular momentum quantum number)

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"p." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. 22 Apr. 2018 <http://www.encyclopedia.com>.

"p." The Oxford Dictionary of Abbreviations. . Encyclopedia.com. (April 22, 2018). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-0

"p." The Oxford Dictionary of Abbreviations. . Retrieved April 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/p-0

Learn more about citation styles

Citation styles

Encyclopedia.com gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.com cannot guarantee each citation it generates. Therefore, it’s best to use Encyclopedia.com citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

http://www.mla.org/style

The Chicago Manual of Style

http://www.chicagomanualofstyle.org/tools_citationguide.html

American Psychological Association

http://apastyle.apa.org/

Notes:
  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most Encyclopedia.com content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.