germ layer
noun Date: 1877 any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • germ layer — n any of the three primary layers of cells differentiated in most embryos during and immediately following gastrulation * * * any of the three distinct types of tissue found in the very early stages of embryonic development (see ectoderm,… …   Medical dictionary

  • germ layer — n. Embryology any of the three primary layers of cells (ectoderm, endoderm, and mesoderm) from which the various organs and parts of the organism develop by further differentiation …   English World dictionary

  • Germ layer — [ http://www.ncbi.nih.gov/About/primer/genetics cell.html NCBI] .] A germ layer is a collection of cells, formed during animal embryogenesis. Germ layers are particularly pronounced in the vertebrates; however, all animals more complex than… …   Wikipedia

  • germ layer — germ′ lay er n. dvl any of the three primary embryonic cell layers Compare ectoderm,endoderm,mesoderm • Etymology: 1875–80 …   From formal English to slang

  • germ layer — any of the three distinct types of tissue found in the very early stages of embryonic development (see ectoderm, endoderm, mesoderm). The germ layers can be traced throughout embryonic development as they differentiate to form the entire range of …   The new mediacal dictionary

  • germ layer — see germinal layers …   Dictionary of invertebrate zoology

  • germ layer — one of the three primary embryonic cell layers. Cf. ectoderm, endoderm, mesoderm. [1875 80] * * * …   Universalium

  • germ layer — noun Embryology each of the three layers of cells (ectoderm, mesoderm, and endoderm) that are formed in the early embryo …   English new terms dictionary

  • germ layer — /ˈdʒɜm leɪə/ (say jerm layuh) noun one of the three primary embryonic cell layers, i.e., ectoderm, endoderm, and mesoderm …   Australian English dictionary

  • germ layer — The layers of cells in an animal embryo at the gastrula stage, from which the various organs of the animal s body will be derived …   Glossary of Biotechnology

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