Cation definition

kătīən
Frequency:
An ion with net positive charge, having more protons than electrons. In electrolysis, cations migrate to a negatively charged cathode.
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An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.
noun
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A positively charged ion, esp. one that moves toward the cathode during electrolysis.
noun
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(chemistry) The ion in an electrolyzed solution that migrates to the cathode.
noun
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(chemistry) A positively charged ion—opposed to anion.
noun
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Other Word Forms

Noun

Singular:
cation
Plural:
cations

Origin of cation

  • Greek kation something going down from neuter present participle of katienai to go down kat-, kata- cata- ienai to go ei- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition