blastocele

n. cavity inside a blastula filled with liquid (early embryonic stage)

A blastocoel(e) or blastocele (also called blastocyst cavity, cleavage cavity or segmentation cavity) is the fluid-filled central region of a blastocyst. A blastocoele forms during embryogenesis when a zygote (a fertilized ovum) divides into many cells through mitosis.The adjectival of "blastocoel(e)" is blastocoelic. A blastocoel can be described as the first cell cavity formed as the Embryo enlarges. It is essential for later gastrulation.
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Noun
1. the fluid-filled cavity inside a blastula
(synonym) blastocoel, blastocoele, segmentation cavity, cleavage cavity
(hypernym) cavity, bodily cavity, cavum
(part-holonym) blastula, blastodermic vesicle

n. blastocoel, fluid-filled cavity surrounded of a blastula (early embryonic stage)