Main Entry: pem·phi·gus Pronunciation: 'pem(p)-fi-g&s, pem-'fI-g&s Function: noun Inflected Form: pluralpem·phi·gus·esorpem·phi·gi/-"jI/ : any of several diseases characterized by the formation of successive eruptions oflarge blisters on apparently normal skin and mucous membranes often in association with sensations of itching or burning and with constitutional symptoms