/ Dictionary / Index B blastomycosis: Meaning and Definition of Find definitions for: blas•to•my•co•sis Pronunciation: (blas"tō-mī-kō'sis), [key] — n. Pathol. any of several diseases caused by certain yeastlike fungi, esp. blastomycetes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: blastomycosis (Thesaurus) blastomycete blastopore Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language