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anion

anion

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

anion , atom or group of atoms carrying a negative charge. The charge results because there are more electrons than protons in the anion. Anions can be formed from nonmetals by reduction (see oxidation and reduction ) or from neutral acids (see acids and bases ) or polar compounds by ionization. Anionic species include Cl - , SO 4-- , and CH 3 COO - . Highly colored intermediates in organic reactions are often radical anions (anions containing an unpaired electron). Salts are made up of anions and cations . See ion .

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anion

A Dictionary of Nursing | 2008 | Copyright

anion (an-I-ŏn) n. a negatively charged ion, which moves towards the anode (positive electrode) when an electric current is passed through the solution containing it. Compare cation. a. gap the difference between the concentrations of cations (positively charged ions) and anions, calculated from the formula (Na+ + K+) – (HCO3− + Cl−): it is used to estimate the unaccounted-for anions in the blood in cases of metabolic disturbance.
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"anion." A Dictionary of Nursing. 2008. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"anion." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O62-anion.html

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anion

A Dictionary of Ecology | 2004 | | Copyright

anion A negative ion, i.e. an atom, or complex of atoms, that has gained one or more electrons and thereby carries a negative electric charge (e.g. Cl−, OH−, and SO2−4). It is so called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode (the positive electrode). Compare cation.
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MICHAEL ALLABY. "anion." A Dictionary of Ecology. 2004. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "anion." A Dictionary of Ecology. 2004. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O14-anion.html

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anion

A Dictionary of Earth Sciences | 1999 | | Copyright

anion A negative ion, i.e. an atom, or complex of atoms, that has gained one or more electrons and thereby carries a negative electric charge, e.g. Cl−, OH−, and SO42−. So-called because when an electric current is passed through a conducting solution the negative ions present in the solution are attracted to the anode (the positive electrode). Compare CATION.
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AILSA ALLABY and MICHAEL ALLABY. "anion." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "anion." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O13-anion.html

AILSA ALLABY and MICHAEL ALLABY. "anion." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-anion.html

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anion

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

an·i·on / ˈanˌīən/ • n. Chem. a negatively charged ion, i.e., one that would be attracted to the anode in electrolysis. The opposite of cation. DERIVATIVES: an·i·on·ic / ˌanīˈänik/ adj.

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"anion." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

"anion." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O999-anion.html

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anion

The Concise Oxford Dictionary of English Etymology | 1996 | | Copyright

anion (electr.) ion with negative charge which moves towards the anode during electrolysis. XIX. — Gr. anión, f. ANA- + ION; cf. ANODE.
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T. F. HOAD. "anion." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

T. F. HOAD. "anion." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O27-anion.html

T. F. HOAD. "anion." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-anion.html

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anion

A Dictionary of Biology | 2004 | Copyright

anion A negatively charged ion, such as the chloride ion (Cl–). Compare cation.
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anion

World Encyclopedia | 2005 | Copyright

anion Negative ion attracted to the anode (positive electrode) during electrolysis.

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anion

A Dictionary of Plant Sciences | 1998 | | Copyright

anion An ion that carries a negative electrical charge.
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MICHAEL ALLABY. "anion." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

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anion

A Dictionary of Food and Nutrition | 2005 | | Copyright

anion A negatively charged ion.
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DAVID A. BENDER. "anion." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

DAVID A. BENDER. "anion." A Dictionary of Food and Nutrition. 2005. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1O39-anion.html

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anion

Oxford Dictionary of Rhymes | 2007 | Copyright

anion •Brian, cyan, Gaian, Geminian, Hawaiian, ion, iron, Ixion, lion, Lyon, Mayan, Narayan, O'Brien, Orion, Paraguayan, prion, Ryan, scion, Uruguayan, Zion •andiron •gridiron, midiron •dandelion • anion • Bruneian •cation, flatiron •gowan, Palawan, rowen •anthozoan, bryozoan, Goan, hydrozoan, Minoan, protozoan, protozoon, rowan, Samoan, spermatozoon •Ohioan • Chicagoan • Virgoan •Idahoan •doyen, Illinoisan, Iroquoian •Ewan, Labuan, McEwan, McLuhan, Siouan •Saskatchewan • Papuan • Paduan •Nicaraguan • gargantuan •carbon, chlorofluorocarbon, graben, hydrocarbon, Laban, radiocarbon •ebon • Melbourne • Theban •gibbon, ribbon •Brisbane, Lisbon •Tyburn •auburn, Bourbon •Alban • Manitoban • Cuban •stubborn •Durban, exurban, suburban, turban, urban

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