1-Stop Dictionary Reference

Morula

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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.

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.

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.

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).

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

Word Usage

"5 The process is repeated again and again, so that the two cells are succeeded by four, eight, sixteen, thirty-two, and so on, with the result that a mass of cells is found within the zona striata, and to this mass the term morula is applied (Fig. 9)."

Hypernym

Words that are more generic or abstract

fertilized egg conceptus embryo

Variant

morulae mulberry mass segmentation sphere blastosphere segmentation