‖n.; pl. Morulae [ 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. [ 1913 Webster ]

n. (Biol.) The process of cleavage, or segmentation, of the ovum, by which a morula is formed. [ 1913 Webster ]