blastula
Noun. (embryology) An early form in the development of an embryo, consisting of a spherical layer of cells filled with fluid; a blastosphere.This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.