In chemistry, a positively charged ion. Pronounced cat-I-on. A cation is as opposed to an anion, which is a negatively charged ion.
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An ion carrying a charge of positive electricity, therefore going to the negatively charged cathode. [G. kation, going down]

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cat·ion 'kat-.ī-ən n the ion in an electrolyzed solution that migrates to the cathode broadly a positively charged ion

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an ion of positive charge, such as a sodium ion (Na+). Compare anion. See electrolyte.

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cat·ion (katґi-on) [cata- + ion] an ion carrying a positive charge owing to a deficiency of electrons; in an electrolytic cell cations migrate toward the cathode, which is negatively charged. cationic adj

Medical dictionary. 2011.

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  • 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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