hīˈdraˌstēn, -_stə̇n noun
also hy·dras·tin -_stə̇n
( -s )
Etymology: International Scientific Vocabulary hydrast- (from New Latin Hydrastis ) + -ine or -in
: a bitter crystalline alkaloid C 21 H 21 NO 6 derived from isoquinoline that is an active constituent of hydrastis and berberis preparations and is the parent compound of narcotine