/ Dictionary / Index M meroblastic: Meaning and Definition of Find definitions for: mer•o•blas•tic Pronunciation: (mer"u-blas'tik), [key] — adj. Embryol. (of certain eggs) undergoing partial cleavage, resulting in unequal blastomeres. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mero- Merodach Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language