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Thesaurus: blastula

That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.

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Definitions

  1. n. That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
  2. n. 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
  3. That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
  4. That stage in the development of the ovum in which the outercells of the morula become more defined and form the blastoderm.
  5. n. 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