-onium

-onium Definition

-onium (ō′nē əm)

any of a group of compounds that are isologues of ammonium sulfonium
a cation hydronium

Etymology: < (amm)onium

Browse dictionary entries near -onium

‹ onionskin
‹ onion
‹ ongoing
‹ onetime
‹ oneself
‹ ones density
‹ onerous
‹ oneness
‹ oneiromancy
‹ oneiric

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