succinyl
noun
suc·ci·nyl ˈsək-sə-nᵊl 
-ˌnil
: either of two radicals derived from succinic acid by removal of one or both hydroxyl groups:
a
: a divalent radical OCCH2CH2CO
b
: a monovalent radical HOOCCH2CH2CO
Word History
Etymology
International Scientific Vocabulary
First Known Use
circa 1868, in the meaning defined above
Medical Definition
succinyl
noun
suc·ci·nyl ˈsək-sən-ᵊl, -sə-ˌnil
: either of two groups of succinic acid:
a
: a bivalent group OCCH2CH2CO
b
: a monovalent group HOOCCH2CH2CO