ˈkyüməˌdēn, -_də̇n noun
( -s )
Etymology: International Scientific Vocabulary cum- + -idine; originally formed as German kumidin
: any of three isomeric liquid bases C 3 H 7 C 6 H 4 NH 2 derived from cumene; isopropyl-aniline ; especially : the para isomer made by nitration of cumene followed by reduction