monoxide

English Thesaurus

1. an oxide containing just one atom of oxygen in the molecule (noun.substance)

hypernym	:	oxide,
definition	:	any compound of oxygen with another element or a radical (noun.substance)

hyponym	:	carbon monoxide, carbon monoxide gas, co,
definition	:	an odorless very poisonous gas that is a product of incomplete combustion of carbon (noun.substance)