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the cavity of a blastula, arising in the course of cleavage.
Historical Examples

Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 Various

(embryol) the cavity within a blastula Also called segmentation cavity
blas’to·coe’lic adj.
blastocoel or blastocoele
The fluid-filled, central cavity of a blastula.


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  • Blastocyst

    the blastula of the mammalian embryo, consisting of an inner cell mass, a cavity, and an outer layer, the trophoblast. noun (embryol) Also called blastosphere. the blastula of mammals: a sphere of cells (trophoblast) enclosing an inner mass of cells and a fluid-filled cavity (blastocoel) another name for germinal vesicle n. blas’to·cys’tic adj. blastocyst (blās’tə-sĭst’) […]

  • Blastocyte


  • Blastocytoma


  • Blastoderm

    the primitive layer of cells that results from the segmentation of the ovum. the layer of cells forming the wall of the blastula, and in most vertebrates enclosing a cavity or a yolk mass. Historical Examples The British Woodlice Wilfred Mark Webb Form and Function E. S. (Edward Stuart) Russell The Works of Francis Maitland […]

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