-ium
noun suffix
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
Dictionary Entries Near -ium
Cite this Entry
“-ium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/-ium. Accessed 29 Nov. 2024.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share