Definition of -ium
1 [New Latin, from Latin, ending of some neuter nouns]
a : a chemical element sodium
b : cation tetrazolium
2 plural -iums or -ia [New Latin, from Latin, from Greek -ion] : small one : mass —especially in botanical terms pollinium
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
You're (Probably) Saying It Wrong
18 words even you might be mispronouncing
Great Big List of Beautiful & Useless Words
Along with their degrees of usefulness
12 French Phrases from Downton Abbey
Many of us have an 'idée fixe'
Rare and Amusing Insults, Volume 2
Sometimes a 'cacafuego' can be a real 'slubberdeg...
Ask the Editors