WordReference Random House Unabridged Dictionary of American English © 2026
car•bon•yl
(kär′bə nil),USA pronunciation adj.
n.
- Chemistrycontaining the carbonyl group.
n.
- Chemistrya compound containing metal combined with carbon monoxide, as nickel carbonyl, Ni(CO)4.
- carbon + -yl 1865–70
'carbonyl' also found in these entries (note: many are not synonyms or translations):