anion

anion
—anionic /an'uy on"ik/, adj. —anionically, adv.
/an"uy'euhn/, n. Physical Chem.
1. a negatively charged ion, as one attracted to the anode in electrolysis.
2. any negatively charged atom or group of atoms (opposed to cation).
[1825-35; < Gk, neut. of anión going up (prp. of aniénai to go up), equiv. to an- AN-3 + -i- go + -on prp. suffix]

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Atom or group of atoms carrying a negative electric charge, indicated by a superscript minus sign after the chemical symbol.

Anions in a liquid subjected to an electric field migrate toward the positive electrode (anode). Examples include hydroxyl (―OH-; see hydroxide), carbonate (―CO32-), and phosphate (―PO43-). See also ion; Compare cation.

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      atom or group of atoms carrying a negative electric charge. See ion.

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Look at other dictionaries:

  • anion — [ anjɔ̃ ] n. m. • 1842; en angl. 1834; gr. anion « ce qui s élève » ♦ Phys. Ion à charge négative qui, dans une électrolyse, se dirige vers l anode (opposé à cation). ● anion nom masculin (grec anion, ce qui s élève) Ion qui possède une charge d… …   Encyclopédie Universelle

  • anion — ANIÓN, anioni, s.m. (chim.) Ion cu sarcină negativă, care este atras de anod. [pr.: ni on] – Din fr. anion. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  ANIÓN s. (fiz.) 1. ion negativ. 2. anion macromolecular v. macroanion …   Dicționar Român

  • Anión — Saltar a navegación, búsqueda Un anión es un ion (sea átomo o molécula) con carga eléctrica negativa, es decir, con exceso de electrones. Los aniones se describen con un estado de oxidación negativo. Las sales típicamente están formadas por… …   Wikipedia Español

  • anion — (n.) a negatively charged ion, which moves toward the ANODE (Cf. anode) (q.v.) during electrolysis, 1834, proposed by the Rev. William Whewell (1794 1866), English polymath, and published by English physicist Michael Faraday, from Gk. anion… …   Etymology dictionary

  • aníon — s. m. [Física] O mesmo que ânion. • [Brasil] Plural: aníones e aníons. • [Portugal] Plural: aníones …   Dicionário da Língua Portuguesa

  • anion — [an′ī΄ən] n. [coined by FARADAY Michael < Gr anion, thing going up, neut. prp. of anienai, to go up < ana , up + ienai, to go: see VIA] a negatively charged ion, esp. one that moves toward the anode during electrolysis: opposed to CATION… …   English World dictionary

  • Anion — An i*on, n. [Gr. ?, neut. ?, p. pr. of ? to go up; ? up + ? to go.] (Chem.) An electro negative atom or group of atoms, or the element which, in electro chemical decompositions, is evolved at the anode; opposed to {cation}. Faraday. [1913… …   The Collaborative International Dictionary of English

  • Anion — Anion. См. Анион. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Anion — (a. Geogr.), s. Änia …   Pierer's Universal-Lexikon

  • Anion — Anion, s. Elektrolyse …   Meyers Großes Konversations-Lexikon

  • Anion — Anion, nach Faradays Bezeichnung der elektronegative Bestandteil eines Elektrolyts; s. Elektrolyse …   Lexikon der gesamten Technik

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