Search Result for "cation": 
Wordnet 3.0

NOUN (1)

1. a positively charged ion; 



The Collaborative International Dictionary of English v.0.48:

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]


WordNet (r) 3.0 (2006):

cation
    n 1: a positively charged ion