car·bon·yl 
(kärbə-nĭl′)
(kärbə-nĭl′)n.
1. The bivalent group C＝O.
2. A metal compound, such as Ni(CO)4, containing the CO group.
car′bon·ylic adj.
- sideritic
- SI-derived unit
- sidero-
- siderochrome
- siderocyte
- siderophile
- siderosis
- sidesaddle
- sideshow
- sideslip
- sidespin
- sidesplitter
- sidesplitting
- sidesplittingly
- sidestep
- sidestepper
- side-straddle hop
- sidestream smoke
- sidestroke
- sidestroker
- sideswipe
- sideswiper
- sidetrack
- sidewalk
- sidewalk superintendent