cation
NounWordNet 3.0
Noun (1)
- a positively charged ion
Webster's Dictionary (GCIDE)
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]