Definition of: phasine

(fā′sēn, -sin) noun Biochem.
A poisonous substance isolated as a white amorphous powder from soya and certain other beans: it acts as a strong agglutinating agent on the red blood cells of man and other animals. Also pha′sin (-sin). [<NL Phas(eolus), a genus of beans (<L, a kidney bean, dim. of phaseolus <Gk. phasēlos, a kind of bean) + -INE²]