cations

[kat-ahy-uhn, -on]

cat·i·on

[kat-ahy-uhn, -on]
noun Physical Chemistry.
1.
a positively charged ion that is attracted to the cathode in electrolysis.
2.
any positively charged atom or group of atoms (opposed to anion).
Also, kation.


Origin:
1825–35; < Greek katión going down (neuter of katiṓn, present participle of kateînai), equivalent to kat- cat- + -i- go + -on neuter present participle suffix

cat·i·on·ic [kat-ahy-on-ik] , adjective
cat·i·on·i·cal·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Cations is always a great word to know.
So is doohickey. Does it mean:
a stew of meat, vegetables, potatoes, etc.
a gadget; dingus; thingumbob.
American Heritage
Science Dictionary
cation   (kāt'ī'ən)  Pronunciation Key 
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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