/ Dictionary / Index B blastopore: Meaning and Definition of Find definitions for: blas•to•pore Pronunciation: (blas'tu-pôr", -pōr"), [key] — n. Embryol. the opening of an archenteron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: blastopore (Thesaurus) blastomycosis blastosphere Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language