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doc Definition of blastosphere
    English to English
    noun
  • 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
  • source: WordNet 3.0
  • The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum.
  • source: Webster 1913
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