cinchonidine

noun

cin·cho·ni·dine | \ -ˈkän-ə-ˌdēn

, -ˈchō-nə-\

Medical Definition of cinchonidine

: a bitter crystalline alkaloid C₁₉H₂₂N₂O stereoisomeric with cinchonine that is found in cinchona bark and used like quinine