blastocyst(redirected from blastocystic)
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The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle.
1. (Biology) Also called: blastosphere the blastula of mammals: a sphere of cells (trophoblast) enclosing an inner mass of cells and a fluid-filled cavity (blastocoel)
2. (Biology) another name for germinal vesicle
blas•to•cyst(ˈblæs tə sɪst)
the blastula of the mammalian embryo consisting of an inner cell mass, a cavity, and the trophoblast.
(or blastula) A hollow ball of cells formed from a morula about five days after fertilization.
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|Noun||1.||blastocyst - the blastula of a placental mammal in which some differentiation of cells has occurred|