blastocyst

/ˈblæstəsɪst/
IPA guide

Other forms: blastocysts

Definitions of blastocyst
  1. noun
    the blastula of a placental mammal in which some differentiation of cells has occurred
    synonyms: blastodermic vessicle
    see moresee less
    type of:
    blastosphere, blastula
    early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
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