Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of the blastomeres from which the ectoderm develops.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of the blastomeres from which the ectoderm forms

from the GNU version of the Collaborative International Dictionary of English

  • n. The more transparent cells, which finally become external, in many segmenting ova, as those of mammals.

from The Century Dictionary and Cyclopedia

  • n. In embryology, the less granular of the two blastomeres into which the mammalian ovum divides: also applied to a descendant of this blastomere in the first stages of development. See blastomere, entomere.

Etymologies

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