Pronunciation: ' s ə k-s ə -n ə l, - ˌ nil
Function: noun
Etymology: International Scientific Vocabulary
Date: circa 1868
: either of two radicals derived from succinic acid by removal of one or both hydroxyl groups: a : a divalent radical OCCH 2 CH 2 CO b : a monovalent radical HOOCCH 2 CH 2 CO