Webster’s Revised Unabridged Dictionary · 1913
Phlorizin
Phlor′i·zin (flŏr′ĭ·zĭn), n. [Gr. φλοιός, φλοός, bark + ῥίζα root.] (Chem.) A bitter white crystalline glucoside extracted from the root bark of the apple, pear, cherry, plum, etc. [Formerly also written phloridzin.]