'Monoxide' definitions:
Definition of 'monoxide'
(from WordNet)
noun
An oxide containing just one atom of oxygen in the molecule
Definition of 'Monoxide'
From: GCIDE
- Monoxide \Mo*nox"ide\, n. [Mon- + oxide.] (Chem.) An oxide containing one atom of oxygen in each molecule; as, barium monoxide. [1913 Webster]