ˈkwinəˌsēn, -_sə̇n noun
( -s )
Etymology: International Scientific Vocabulary quinic (in quinic acid ) + -ine; originally formed in French
: a bitter poisonous reddish yellow amorphous alkaloid C 20 H 24 N 2 O 2 isomeric with quinine and obtained from cinchona bark or by heating a salt of quinine — called also quinotoxine