Blastosphere

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The American Heritage® Dictionary of the English Language, 4th Edition
  • n. See blastula.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • n. A blastula
  • the GNU version of the Collaborative International Dictionary of English
  • n. The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum.
  • The Century Dictionary and Cyclopedia
  • n. In embryology: A hollow sphere (vesicular morula) composed of a single layer of blastomeres or derivative cells, inclosing a central cavity or blastocœle.
  • n. By Haeckel restricted to the germ-vesicle, vesicular embryo, or blastodermic vesicle of the Mammalia, which follows after gastrulation, and is called by him a gastrocystis, or intestinal germ-vesicle. Also called blastula.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • n. early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
  • Hypernym
    Words that are more generic or abstract
    Hyponym