Main Entry: fag·o·py·rism Pronunciation: "fag-O-'pI-"riz-&m Variant: alsofag·o·py·ris·mus/-"pI-'riz-m&s/ Function: noun Inflected Form: plural-rismsalso-ris·mus·es : a photosensitization especiallyof swine and sheep that is due to eating large quantities of buckwheat (especially Fagopyrum esculentum of the family Polygonaceae) and that appears principally on the nonpigmented parts of theskin as an intense redness and swelling with severe itching and the formation of vesicles and later sores and scabs —compare BIGHEADb,HYPERICISM
fagopyrism fag·o·py·rism (fāg'ō-pī'rĭz'əm, fə-gŏp'ə-) n. Photosensitization, mainly in cattle and sheep, caused by ingestion of buckwheat (Fagopyrum esculentum) and characterized by irritation of the skin, edema, and a serous exudate.