cation

cation
—cationic /kat'uy on"ik/, adj. —cationically, adv.
/kat"uy'euhn, -on/, n. Physical Chem.
1. a positively charged ion that is attracted to the cathode in electrolysis.
2. any positively charged atom or group of atoms (opposed to anion).
Also, kation.
[1825-35; < Gk katión going down (neut. of katión, prp. of kateînai), equiv. to kat- CAT- + -i- go + -on neut. prp. suffix]

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

Cations in a liquid subjected to an electric field collect at the negative pole (cathode). Examples include sodium (Na+), calcium (Ca2+), and ammonium (NH4+; see ammonia). See also ion; Compare anion.

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      atom or group of atoms that bears a positive electric charge. See ion.

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Universalium. 2010.

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Look at other dictionaries:

  • cation — [ katjɔ̃ ] n. m. • 1866; du gr. kata « en bas » et ion ♦ Ion chargé positivement entraîné vers la cathode, dans un électrolyte ou dans un gaz (opposé à anion). ● cation nom masculin Ion qui se porte à la cathode dans l électrolyse d une solution …   Encyclopédie Universelle

  • cation — CATIÓN, cationi, s.m. Ion încărcat cu sarcină electrică pozitivă, care este atras de catod. [pr.: ti on] – Din fr. cation. Trimis de valeriu, 13.09.2007. Sursa: DEX 98  CATIÓN s. (fiz.) 1. ion pozitiv. 2. cation macro molecular = macrocation.… …   Dicționar Român

  • cátion — s. m. [Física] Íon que, carregado de eletricidade positiva, se dirige para o cátodo. = CATÍON • [Brasil] Plural: catíones ou cátions.   ♦ Grafia em Portugal: catião …   Dicionário da Língua Portuguesa

  • catíon — s. m. Cátion. • [Brasil] Plural: catíones ou cátions. • [Portugal] Plural: catíones …   Dicionário da Língua Portuguesa

  • cation'ic — adjective • • • Main Entry: ↑cation …   Useful english dictionary

  • Cation — Cat i*on, n. [Gr. ? downward + ? going, p. pr. of ? to go.] (Chem.) a positively charged atom, radical, or molecule, which in electrolysis migrates to the cathode; a positive ion; opposed to {anion}. Faraday. [1913 Webster +PJC] …   The Collaborative International Dictionary of English

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

  • catión — Ion cargado positivamente que en una solución es atraído hacia el electrodo negativo. Diccionario Mosby Medicina, Enfermería y Ciencias de la Salud, Ediciones Hancourt, S.A. 1999 …   Diccionario médico

  • cation — 1834, from Gk. kation going down, neut. prp. of katienai to go down, from kata down (see KATA (Cf. kata )) + ienai to go (see ION (Cf. ion)) …   Etymology dictionary

  • catión — sustantivo masculino 1. Área: física Ion con carga positiva …   Diccionario Salamanca de la Lengua Española

  • catión — (De cata y ion). m. Fís. Ion con carga positiva …   Diccionario de la lengua española

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