Dictionary

onium

adjective oni·um \ˈō-nē-əm\

Definition of ONIUM

:  being or characterized by a usually complex cation

Origin of ONIUM

-onium
First Known Use: 1905
Medical Dictionary

onium

adjective oni·um \ˈō-nē-əm\

Medical Definition of ONIUM

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

Browse

2 ENTRIES FOUND:
Next Word in the Dictionary: -oniumPrevious Word in the Dictionary: OniscusAll Words Near: onium
July 03, 2015
interpellate Hear it
to formally question a public official
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