/ Dictionary / Index G griseofulvin: Meaning and Definition of Find definitions for: gris•e•o•ful•vin Pronunciation: (griz"ē-ō-fool'vin, -ful'-, gris"-), [key] — n. Pharm. an antibiotic, CHClO, obtained from a species of Penicillium, used in the treatment of ringworm and other fungous infections of the skin. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: griseofulvin (Thesaurus) Griselda griseous Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language