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)