Morula \Mor"u*la\, n.; pl. Morul[ae]. [NL., dim. of L. morum a mulberry.]

(Biol.) The sphere or globular mass of cells (blastomeres), formed by the clevage of the ovum or egg in the first stages of its development; -- called also mulberry mass, segmentation sphere, and blastosphere. See Segmentation.

Source: Webster's Revised Unabridged Dictionary (1913)