/ Dictionary / Index M morula: Meaning and Definition of Find definitions for: mor•u•la Pronunciation: (môr'oo-lu, -yoo-), [key] — pl. -las, -lae the mass of cells resulting from the cleavage of the ovum before the formation of a blastula. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: morula (Thesaurus) mortuary MOS Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language