from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The spherical embryonic mass of blastomeres formed before the blastula and resulting from cleavage of the fertilized ovum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A spherical mass of blastomeres that forms following the splitting of a zygote; it becomes the blastula.
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from The Century Dictionary and Cyclopedia
- n. In embryology, the condition (resembling a mulberry) of an ovum after complete segmentation of the vitellus or yolk and before the formation of a blastula, when the contents are a mass of cells derived by cleavage of the original and successively formed nuclei; a mulberry-mass of blastomeres or cleavage-cells. See monerula, blastula, gastrula, and cut under gastrulation.
- n. In pathology, same as button-scurvy (which see, under scurvy).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a solid mass of blastomeres that forms when the zygote splits; develops into the blastula
New Latin mōrula, feminine diminutive of Latin mōrum, mulberry.(American Heritage® Dictionary of the English Language, Fourth Edition)
From diminutive of Latin morum ("mulberry"). (Wiktionary)