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oxidoreductase
oxime
oximeter
oxlip
Oxo
Oxon.
Oxonian
oxonium
oxonium ion
oxpecker
oxtail
oxtercog
oxther
oxy-
oxyacetylene
oxyacid
oxycephaly
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oxonium ion
ox·o·ni·um i·on [ ok sṓnee əm on ] (plural ox·o·ni·um i·ons)


noun 
Definition:
 
molecule containing oxygen: a cation consisting of an oxygen atom covalently bound to three other atoms or groups of atoms
[<oxy- after ammonium]
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