/flawr"euh zin, flor"-, fleuh ruy"zin/ , n. Chem.
a bitter, crystalline glucoside, C 21 H 24 O 10 , obtained from the root bark of the apple, pear, cherry, etc.: formerly used as a tonic and in the treatment of malaria; now used chiefly in biochemical research.
Also, phloridzin /fleuh rid"zin/ , phlorhizin, phlorrhizin .
[ 1830-40; phló ( os ) bark (var. of PHLOIÓS) + rhíz ( a ) ROOT 1 + -IN 2 ]