[kat-ahy-uh n, -on]
- a positively charged ion that is attracted to the cathode in electrolysis.
- any positively charged atom or group of atoms (opposed to anion).
Origin of cation
1825–35; < Greek katión going down (neuter of katiṓn, present participle of kateînai), equivalent to kat- cat- + -i- go + -on neuter present participle suffix
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cation
The remainder of the molecule, which usually consists of a single atom, is the cation.
It will be noticed that in neutralization the anion of the acid and the cation of the base are not changed.
For this class of grievances the present edu- cation of woman is responsible.The Unexpurgated Case Against Women Suffrage
Almroth E. Wright
- a positively charged ion; an ion that is attracted to the cathode during electrolysisCompare anion
C19: from cata- + ion
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for cation
Online Etymology Dictionary, © 2010 Douglas Harper
- An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- An ion with net positive charge, having more protons than electrons. In electrolysis, cations migrate to a negatively charged cathode. Compare anion.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.