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

  • n. The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The mammalian blastula

from the GNU version of the Collaborative International Dictionary of English

  • n. The germinal vesicle.

from The Century Dictionary and Cyclopedia

  • n. The germinal vesicle. N. E. D. See blastoderm.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the blastula of a placental mammal in which some differentiation of cells has occurred


blasto- +‎ cyst (Wiktionary)



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