Blastocyst Blas"to*cyst, n. [Gr. blasto`s sprout + E. cyst.] (Biol.) The germinal vesicle. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

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  • blastocyst — (n.) 1876, from BLASTO (Cf. blasto ) + CYST (Cf. cyst) …   Etymology dictionary

  • blastocyst — [blas′tōsist΄, blas′təsist΄] n. [ BLASTO + CYST] BLASTULA …   English World dictionary

  • Blastocyst — Infobox Embryology Name = Blastocyte Latin = GraySubject = GrayPage = Caption = Caption2 = System = CarnegieStage = 3 Days = 5 Precursor = GivesRiseTo = MeshName = Blastocyst MeshNumber = A16.254.085 DorlandsPre = b 14 DorlandsSuf = 12187695 The… …   Wikipedia

  • Blastocyst — A stage in the early embryonic development of mammals in which there is a hollow sphere with an outer layer of cells and inside the hollow sphere, there is a cluster of cells called the inner cell mass. If development continues, the outer layer… …   Medical dictionary

  • blastocyst — n. an early stage of embryonic development that consists of a hollow ball of cells with a localized thickening (the inner cell mass) that will develop into the actual embryo; the remainder of the blastocyst is composed of trophoblast . At first… …   The new mediacal dictionary

  • blastocyst — In mammalian development, cleavage produces a thin walled hollow sphere, whose wall is the trophoblast, with the embryo proper being represented by a mass of cells at one side. The blastocyst is formed before implantation and is equivalent to the …   Dictionary of molecular biology

  • blastocyst — /blas teuh sist/, n. Embryol. the blastula of the mammalian embryo, consisting of an inner cell mass, a cavity, and an outer layer, the trophoblast. [1885 90; BLASTO + CYST] * * * ▪ embryo phase       a distinctive stage of a mammalian embryo. It …   Universalium

  • blastocyst — noun Date: circa 1881 the modified blastula of a placental mammal having an outer layer composed of the trophoblast …   New Collegiate Dictionary

  • blastocyst — n. [Gr. blastos, bud; kystis, bladder] (PLATYHELMINTHES: Cestoda) In Trypanorhynca, a posterior bladder of the metacestode into which the body is withdrawn …   Dictionary of invertebrate zoology

  • blastocyst — noun The mammalian blastula …   Wiktionary

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