Medical Dictionary


adj oni·um \ˈō-nē-əm\

Medical Definition of ONIUM

:  being or characterized by a usually complex cation <onium salts>


July 05, 2015
bunkum Hear it
insincere or foolish talk
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears