carbonyl

adjective

1. containing the carbonyl group.

noun

2. a compound containing metal combined with carbon monoxide, as nickel carbonyl, Ni(CO)4.

noun chem

1. (modifier) of, consisting of, or containing the divalent group =COa carbonyl group or radical
2. any one of a class of inorganic complexes in which carbonyl groups are bound directly to metal atoms

n.

1. The bivalent radical CO.

1. The radical CO, found in a wide range of chemical compounds, especially in aldehydes and ketones.