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.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

gastrula - 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.

English-Spanish Medical Dictionary © Farlex 2012

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References in periodicals archive

The bilaterally symmetrical nervous system of the ophiopluteus first forms at the anterior end (apical organ) of the late gastrula stage embryo; and later it is associated with the ciliary band, oral epidermis, and digestive system of the larva (Cisternas and Byrne, 2003; Byrne et al., 2008; Hirokawa et al., 2008; Dupont et al., 2009; Gliznutsa and Dautov, 2011).

Abbreviated Development of the Brooding Brittle Star Ophioplocus esmarki

The ciliated gastrula was observed 13 h post-fertilization (Fig.

EMBRYONIC AND LARVAL DEVELOPMENT OF THE SUBTROPICAL GEODUCK CLAM PANOPEA GLOBOSA (BIVALVIA: HIATELLIDAE)

Thirteen carp tissues (heart, liver, kidney, hindbrain, spleen, foregut, hindgut, muscle, gill, eye, scale, fin and gonad) were collected from six 2-year-old healthy adults (three females and three males), and five critical periods of embryonic development (blastula, gastrula, neurula, tail-bud and hatching) were obtained from embryos.

Identification, Molecular Characterization and Expression Pattern Analysis of SoxD Subgroup Genes in Yellow River Carp (Cyprinus carpio)

Perlecan-LP is expressed at very low levels in the gastrula stage and remains expressed at low levels until late stages (spat and juvenile).

Extracellular Matrix Components in Bivalvia: Shell and ECM Components in Developmental and Adult Tissues

The embryological primordium for the ODT is the primitive gut tube, which is believed to arise from the definitive endoderm during the late gastrula stage.

Potential latitudinal variation in orodigestive tract cancers in Africa

Zinc transporter LIVI controls epithelial-mesenchymal transition in zebrafish gastrula organizer.

Expression of E-cadherin, Slug and NCAM and its relationship to tumor invasiveness in patients with acromegaly

Stainier, "A common progenitor for haematopoietic and endothelial lineages in the zebrafish gastrula," Nature, vol.

Insights into Endothelial Progenitor Cells: Origin, Classification, Potentials, and Prospects

Upon passage of eight hours, a gastrula was formed and its epiboly started to extend toward the vegetal pole (Fig.

Early life history of the eastern Korean tetraploid spined loach, Iksookimia yongdokensis (Pisces: Cobitidae)

Egg viability was measured at late gastrula stage (~12 h post-fertilization (hpf)) in a sample of ~260 embryos (Zaniboni-Filho, 1992; Rizzo et al., 2003).

Induction of triploidy in Rhamdia quelen (Siluriformes, Heptapteridae) by double-temperature shock