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.
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