/ Dictionary / Index P parablast: Meaning and Definition of Find definitions for: par•a•blast Pronunciation: (par'u-blast"), [key] — n. Biol. the nutritive yolk of a meroblastic ovum or egg. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. parabiosis parable Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language