gastrula

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gas·tru·la

 (găs′trə-lə)
n. pl. gas·tru·las or gas·tru·lae (-lē′)
An embryo at the stage following the blastula, after the movement of cells results in the formation of the three germ layers, ectoderm, mesoderm, and endoderm.

[New Latin : Greek gastēr, gastr-, belly + Latin -ula, feminine diminutive suff.]

gas′tru·lar (-lər) adj.

gastrula

(ˈɡæstrʊlə)
n, pl -las or -lae (-ˌliː)
(Biology) a saclike animal embryo consisting of three layers of cells (ectoderm, mesoderm, and endoderm) surrounding a central cavity (archenteron) with a small opening (blastopore) to the exterior. See also ectoderm, mesoderm, endoderm
[C19: New Latin: little stomach, from Greek gastēr belly]
ˈgastrular adj

gas•tru•la

(ˈgæs trʊ lə)

n., pl. -las, -lae (-ˌli)
an embryo in an early stage of development during which the blastula differentiates into two cell layers and the central cavity becomes the archenteron.
[1875–80]
gas′tru•lar, adj.
gas`tru•la′tion, n.

gas·tru·la

(găs′trə-lə)
Plural gastrulas or gastrulae (găs′trə-lē′)
An embryo at the stage following the blastula, in which the cells are distributed into layers that eventually develop into the organs of the body. Compare blastula.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.gastrula - double-walled stage of the embryo resulting from invagination of the blastulagastrula - double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
conceptus, fertilized egg, embryo - an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life
archenteron - central cavity of the gastrula; becomes the intestinal or digestive cavity
Translations
gastrula

gas·tru·la

n. gástrula, etapa primitiva del desarrollo embriónico.
References in periodicals archive ?
As I type these names, my computer underlines all of the names as spelling errors, suggesting, as examples, strange alternatives such as guerrillas, gastrulas and hierodules
Perform a second sorting under a dissecting microscope using dissecting probes or pipettes to select normal blastulas and early gastrulas, which have numerous small cells, even dorsal pigmentation, and a cream-colored ventral region (Figure 3D).
The initial gastrula is not ciliated, but patches of cilia in the area of the presumptive velum and head vesicle can be seen in scanning electron micrographs of later gastrulas.