Adjective
Pertaining to, or derived from, a ketone; as, a ketonic acid.
Source: Webster's dictionaryKetones are trigonal planar around the ketonic carbon, with C−C−O and C−C−C bond angles of approximately 120°. Source: Internet
For example, C-H bonds adjacent to ketonic carbonyl groups can be replaced by C-D bonds, using acid or base catalysis. Source: Internet