carbonyl
noun
car·bon·yl ˈkär-bə-ˌnil 
-ˌnēl,
ˌkär-bə-ˈnēl,
kär-ˈbä-nᵊl,
especially British ˈkä-bə-ˌnī(-ə)l
1
: an organic functional group or radical −CO− occurring in aldehydes, ketones, carboxylic acids, esters, and their derivatives
2
: a coordination complex involving the neutral radical CO
chromium carbonyl
carbonylic
ˌkär-bə-ˈni-lik
adjective 
Example Sentences
Recent Examples on the Web Incorporating his innovative use of aldehydes, which are organic compounds where a carbon atom shares a double bond with an oxygen atom, a single bond with a hydrogen atom, and a single bond with another atom to form the carbonyl group. 
Allyson Portee, Forbes, 16 Apr. 2021 Some scientists are less confident about using carbonyl sulfide as a method to measure photosynthesis. Sarah Gibbens, National Geographic, 16 May 2019 As new land was uncovered, plants sprang up and began destroying carbonyl sulfide. Carl Zimmer, New York Times, 5 Apr. 2017 Plants draw in carbonyl sulfide along with carbon dioxide. Carl Zimmer, New York Times, 5 Apr. 2017
Allyson Portee, Forbes, 16 Apr. 2021 Some scientists are less confident about using carbonyl sulfide as a method to measure photosynthesis. Sarah Gibbens, National Geographic, 16 May 2019 As new land was uncovered, plants sprang up and began destroying carbonyl sulfide. Carl Zimmer, New York Times, 5 Apr. 2017 Plants draw in carbonyl sulfide along with carbon dioxide. Carl Zimmer, New York Times, 5 Apr. 2017 Word History
First Known Use
1857, in the meaning defined at sense 1
Medical Definition
carbonyl
noun
car·bon·yl ˈkär-bə-ˌnil, -ˌnēl
: an organic functional group CO occurring in aldehydes, ketones, carboxylic acids, esters, and their derivatives