An unusually little blastomere formed by unequal cleavage of a fertilized ovum
among smaller cells, or blastomeres, caused by the whole segmentation of a telolecithal ovum.
small one of two masses or moieties into that the vitellus of a lamelli branch, as a fresh-water mussel, divides; the so-called “animal cellular” of Rabl, which further subdivides into blastomeres. See macromere.
one of many little blastomeres, or cells, which derive from early cleavage of the egg: opposed to macromere or megamere.