cation (redirected from cation channels)

cat·i·on  (ktn)

n.

An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.

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[Greek kation, something going down, from neuter present participle of katienai, to go down : kat-, kata-, cata- + ienai, to go; see ei- in Indo-European roots.]

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cati·onic (kt-nk) adj.

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cation [kat-eye-on]

Noun

a positively charged ion [Greek kata- down + ienai to go]

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cation  (ktn)

An ion with net positive charge, having more protons than electrons. In electrolysis, cations migrate to a negatively charged cathode. Compare anion.

Thesaurus

Noun

1.

cation - a positively charged ion hydrogen ion - a positively charged atom of hydrogen; that is to say, a normal hydrogen atomic nucleus ion - a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons diazonium - the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes