Definition of blastocyst in English:


Syllabification: blas·to·cyst
Pronunciation: /ˈblastəˌsist


  • A mammalian blastula in which some differentiation of cells has occurred. Also called blastodermic vesicle.
    More example sentences
    • Many scientists believe blastocysts - stem cells taken from days-old embryos - have much greater potential.
    • The fundamental question concerns the nature of the blastocyst from which stem cells are derived.
    • Adult stem cells were injected into a mouse blastocyst, an early embryonic stage of a mouse.

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Pronunciation: ˌastrəˈgāSHən
(in science fiction) navigation in outer space