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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Word of the day demoralize
Pronunciation: dɪˈmɒrəlʌɪz
cause (someone) to lose confidence or hope