carbonyl Meaning, Definition & Usage

  1. noun a compound containing metal combined with carbon monoxide
  2. adjective relating to or containing the carbonyl group
    carbonylic.

WordNet

Car"bon*yl noun
Etymology
Carbon + -yl.
Definitions
  1. (Chem.) The radical (CO)'', occuring, always combined, in many compounds, as the aldehydes, the ketones, urea, carbonyl chloride, etc. ✍ Though denoted by a formula identical with that of carbon monoxide, it is chemically distinct, as carbon seems to be divalent in carbon monoxide, but tetravalent in carbonyl compounds.

Webster 1913