ˈkwinəˌdēn, -_də̇n noun
also chin·i·dine ˈki-
( -s )
Etymology: International Scientific Vocabulary quin- or chin- + -idine; probably originally formed as French quinidine
: a crystalline dextrorotatory alkaloid C 20 H 24 N 2 O 2 stereoisomeric with quinine found in some species of cinchona and used sometimes in place of quinine but chiefly in the form of its sulfate in the treatment of auricular fibrillation