gastrulae — n. stage in embryonic development (Biology) … English contemporary dictionary
gastrula — noun (plural las or gastrulae) Etymology: New Latin, from gastr Date: 1876 an early metazoan embryo in which the ectoderm, mesoderm, and endoderm are established either by invagination of the blastula (as in fish and amphibians) to form a… … New Collegiate Dictionary
Gasträa — Gasträa, eine hypothetische Tierform, welche die Ahnenform der meisten Tiere, nämlich aller Metazoen (s.d.), darstellen soll. Sie bestand angeblich aus einem Sack mit doppelter Wandung; die äußere Wand bildete die Haut, die innere umschloß die… … Meyers Großes Konversations-Lexikon
gastrula — gastrular, adj. /gas troo leuh/, n., pl. gastrulas, gastrulae / lee /. Embryol. a metazoan embryo in an early state of germ layer formation following the blastula stage, consisting of a cuplike body of two layers of cells, the ectoderm and… … Universalium
Ostrea lurida — Olympia oyster Scientific classification Kingdom: Animalia Phylum … Wikipedia
gastrula — [ gastrʊlə] noun (plural gastrulae li:) Embryology an embryo at the stage following the blastula, when it is a hollow cup shaped structure having three layers of cells. Derivatives gastrulation noun Origin C19: mod. L., from Gk gastēr, gastr… … English new terms dictionary
emboly — /ˈɛmbəli/ (say embuhlee) noun a gradual embedding of one part into another, as in the formation of certain gastrulae. {Greek embolē throwing in, invasion} …
gastrula — /ˈgæstrələ/ (say gastruhluh) noun (plural gastrulae /ˈgæstrəli/ (say gastruhlee)) the developing embryo when it consists of the three germ layers, occupying their characteristic positions. {New Latin, diminutive of Greek gastēr belly, stomach}… …
gastrula — [gas′tro͞o lə] n. pl. gastrulae [gas′tro͞olē΄, gas′tro͞olī] or gastrulas [ModL, dim. < Gr gastēr, the stomach] an embryo in an early stage of development, consisting of a sac with two layers, the ectoderm and endoderm, enclosing a central… … English World dictionary
gastrula — n. (pl. gastrulae) Zool. an embryonic stage developing from the blastula. Etymology: mod.L f. Gk gaster gast(e)ros belly … Useful english dictionary
