quadratic
quadratic, mathematical expression of the second degree in one or more unknowns (see polynomial). The general quadratic in one unknown has the form ax^{2}+bx+c, where a, b, and c are constants and x is the variable. A quadratic equation ax^{2}+bx+c=0 always has two roots, not necessarily distinct; these may be real or complex (see number). The quadratic formula gives the roots of any quadratic equation in terms of its coefficients a, b, and c. The expression b^{2}4ac is called the discriminant and vanishes when the two roots coincide. If a, b, and c are real and the discriminant is not less than zero, the roots are real.
Cite this article
Pick a style below, and copy the text for your bibliography.

MLA

Chicago

APA
"quadratic." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 16 Jan. 2018 <http://www.encyclopedia.com>.
"quadratic." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (January 16, 2018). http://www.encyclopedia.com/reference/encyclopediasalmanacstranscriptsandmaps/quadratic
"quadratic." The Columbia Encyclopedia, 6th ed.. . Retrieved January 16, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopediasalmanacstranscriptsandmaps/quadratic
quadratic
quad·rat·ic / kwäˈdratik/ • adj. Math. involving the second and no higher power of an unknown quantity or variable: a quadratic equation. • n. a quadratic equation.
Cite this article
Pick a style below, and copy the text for your bibliography.

MLA

Chicago

APA
"quadratic." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 16 Jan. 2018 <http://www.encyclopedia.com>.
"quadratic." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (January 16, 2018). http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic0
"quadratic." The Oxford Pocket Dictionary of Current English. . Retrieved January 16, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic0
quadratic
quadratic square; (math.) involving the second and no higher power of an unknown or variable. XVII. — F. quadratique or modL. quadrāticus. quadrature squaring. XVI. — F. or L.
Cite this article
Pick a style below, and copy the text for your bibliography.

MLA

Chicago

APA
"quadratic." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 16 Jan. 2018 <http://www.encyclopedia.com>.
"quadratic." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (January 16, 2018). http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic1
"quadratic." The Concise Oxford Dictionary of English Etymology. . Retrieved January 16, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic1
quadratic
quadratic •achromatic, acrobatic, Adriatic, aerobatic, anagrammatic, aquatic, aristocratic, aromatic, Asiatic, asthmatic, athematic, attic, autocratic, automatic, axiomatic, bureaucratic, charismatic, chromatic, cinematic, climatic, dalmatic, democratic, diagrammatic, diaphragmatic, diplomatic, dogmatic, dramatic, ecstatic, emblematic, emphatic, enigmatic, epigrammatic, erratic, fanatic, hepatic, hieratic, hydrostatic, hypostatic, idiomatic, idiosyncratic, isochromatic, lymphatic, melodramatic, meritocratic, miasmatic, monochromatic, monocratic, monogrammatic, numismatic, operatic, panchromatic, pancreatic, paradigmatic, phlegmatic, photostatic, piratic, plutocratic, pneumatic, polychromatic, pragmatic, prelatic, prismatic, problematic, programmatic, psychosomatic, quadratic, rheumatic, schematic, schismatic, sciatic, semiautomatic, Socratic, somatic, static, stigmatic, subaquatic, sylvatic, symptomatic, systematic, technocratic, thematic, theocratic, thermostatic, traumatic
•anaphylactic, ataractic, autodidactic, chiropractic, climactic, didactic, galactic, lactic, prophylactic, syntactic, tactic
•asphaltic
•antic, Atlantic, corybantic, frantic, geomantic, gigantic, mantic, necromantic, pedantic, romantic, semantic, sycophantic, transatlantic
•synaptic
•bombastic, drastic, dynastic, ecclesiastic, elastic, encomiastic, enthusiastic, fantastic, gymnastic, iconoclastic, mastic, monastic, neoplastic, orgastic, orgiastic, pederastic, periphrastic, plastic, pleonastic, sarcastic, scholastic, scholiastic, spastic
•matchstick • candlestick • panstick
•slapstick • cathartic
•Antarctic, arctic, subantarctic, subarctic
•Vedantic • yardstick
•aesthetic (US esthetic), alphabetic, anaesthetic (US anesthetic), antithetic, apathetic, apologetic, arithmetic, ascetic, athletic, balletic, bathetic, cosmetic, cybernetic, diabetic, dietetic, diuretic, electromagnetic, emetic, energetic, exegetic, frenetic, genetic, Helvetic, hermetic, homiletic, kinetic, magnetic, metic, mimetic, parenthetic, pathetic, peripatetic, phonetic, photosynthetic, poetic, prophetic, prothetic, psychokinetic, splenetic, sympathetic, syncretic, syndetic, synthetic, telekinetic, theoretic, zetetic
•apoplectic, catalectic, dialectic, eclectic, hectic
•Celtic
•authentic, crescentic
•aseptic, dyspeptic, epileptic, nympholeptic, peptic, proleptic, sceptic (US skeptic), septic
•domestic, majestic
•cretic
•analytic, anchoritic, anthracitic, arthritic, bauxitic, calcitic, catalytic, critic, cryptanalytic, Cushitic, dendritic, diacritic, dioritic, dolomitic, enclitic, eremitic, hermitic, lignitic, mephitic, paralytic, parasitic, psychoanalytic, pyritic, Sanskritic, saprophytic, Semitic, sybaritic, syenitic, syphilitic, troglodytic
•apocalyptic, cryptic, diptych, elliptic, glyptic, styptic, triptych
•aoristic, artistic, autistic, cystic, deistic, distich, egoistic, fistic, holistic, juristic, logistic, monistic, mystic, puristic, sadistic, Taoistic, theistic, truistic, veristic
•fiddlestick
•dipstick, lipstick
•impolitic, politic
•polyptych • hemistich • heretic
•nightstick
•abiotic, amniotic, antibiotic, autoerotic, chaotic, demotic, despotic, erotic, exotic, homoerotic, hypnotic, idiotic, macrobiotic, meiotic, narcotic, neurotic, osmotic, patriotic, psychotic, quixotic, robotic, sclerotic, semiotic, symbiotic, zygotic, zymotic
•Coptic, optic, panoptic, synoptic
•acrostic, agnostic, diagnostic, gnostic, prognostic
•knobstick • chopstick • aeronautic
•Baltic, basaltic, cobaltic
•caustic • swordstick • photic • joystick
•psychotherapeutic, therapeutic
•acoustic • broomstick • cultic
•fustic, rustic
•drumstick • gearstick • lunatic
Cite this article
Pick a style below, and copy the text for your bibliography.

MLA

Chicago

APA
"quadratic." Oxford Dictionary of Rhymes. . Encyclopedia.com. 16 Jan. 2018 <http://www.encyclopedia.com>.
"quadratic." Oxford Dictionary of Rhymes. . Encyclopedia.com. (January 16, 2018). http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic
"quadratic." Oxford Dictionary of Rhymes. . Retrieved January 16, 2018 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionariesthesaurusespicturesandpressreleases/quadratic