Reference meaning
CO
Last updated
an odorless very poisonous gas that is a product of incomplete combustion of carbon
Related source terms
carbon monoxidecarbon monoxide gas
Other meanings
2. noun
a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
3. noun
one who refuses to serve in the armed forces on grounds of conscience
4. noun
a state in west central United States in the Rocky Mountains
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 14797641-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.