blas·tu·la

(blăs′chə-lə)

n. pl. blas·tu·las or blas·tu·lae (-lē′)

An early embryonic form produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity. Also called blastosphere.

[New Latin : from Greek blastos, bud + Latin -ula, feminine diminutive suff.]

blas′tu·lar adj.

blas′tu·la′tion (-lā′shən) n.

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.

blastula

(ˈblæstjʊlə)

n, pl -las or -lae (-liː)

(Biology) an early form of an animal embryo that develops from a morula, consisting of a sphere of cells with a central cavity. Also called: blastosphere

[C19: New Latin; see blasto-]

ˈblastular adj

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

blas•tu•la

(ˈblæs tʃə lə)

n., pl. -las, -lae (-ˌli)

the early developmental stage of an animal, following the morula stage and consisting of a single spherical layer of cells enclosing a hollow, central cavity. Compare blastocyst.

[1885–90; < Greek blast(ós) bud, sprout + New Latin -ula -ule]

blas′tu•lar, adj.

blas`tu•la′tion (-ˈleɪ ʃən) n.

blas·tu·la

(blăs′chə-lə)

Plural blastulas or blastulae (blăs′chə-lē′)

An embryo at the stage immediately following the division of the fertilized egg cell, consisting of a ball-shaped layer of cells around a fluid-filled cavity. Compare gastrula.

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

blastula - early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs

blastosphere

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

blastocele, blastocoel, blastocoele, cleavage cavity, segmentation cavity - the fluid-filled cavity inside a blastula

blastocyst, blastodermic vessicle - the blastula of a placental mammal in which some differentiation of cells has occurred

trophoblast - the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall; "after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta"

Translations

blas·tu·la

n. blástula, etapa primitiva del óvulo.

English-Spanish Medical Dictionary © Farlex 2012

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References in periodicals archive

However, as of 2019, we will highlight our efforts to extract cell samples from fertilized blastula eggs from cattle, then recover DNA from 7-10 cells and purify and amplify this so that the material can be used for ordinary genetic tests and genomic selection.

Exclusive Interview from Conference Speaker Dr Sigbjorn Gregusson Released Ahead of SMi's 9th Annual Biobanking Conference

Un cuerpo que se va formando desde su etapa primigenia de cigoto, pasando a huevo, morula, blastula, glastula, preembrion, embrion, feto y nacido, siendo estos estos dos ultimos los que cuentan con forma y apariencia humana.

LOS ACTOS DE LIBRE DISPOSICION DEL CUERPO HUMANO/The acts of free disposal of the human body/Atos de livre disposicao do corpo humano

In about 1km walk along the trail, we found two clutches of varying stages laid in inclined Pandanus leaf axils, one newly laid (about blastula stage, with 8 embryos) and another clutch with four embryos having well-developed abdominal sacs.

Abundancia y uso de microhabitat por parte del sapo Platymantis hazelae (Anura: Ceratobatrachidae)

To examine the development of the nervous system, we collected samples at the following stages: blastula (16 hpf): early, middle, and late trochophore (18 and 22 hpf, 28 hpf, and 32-36 hpf.

Neuronal Development in the Larvae of the Invasive Biofouler Dreissena polymorpha (Mollusca: Bivalvia), with Special Attention to Sensory Elements and Swimming Behavior

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)

This was followed by development of the blastula >64-cell phase at 3 hpf (Fig.

EMBRYONIC, LARVAL, AND EARLY POSTLARVAL DEVELOPMENT OF THE TROPICAL BLACK-LIP ROCK OYSTER SACCOSTREA ECHINATA

We detected FN-LP in the oyster blastula stage (12 hpf).

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

Continuous cleavage led to a blastula at 280 minutes after fertilisation (Fig.

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

After fertilization process the eggs develop into 2-cell, 4-cell, 8-cell, 16-cell stages and so on until a blastula stage (128-cell stage) is formed (Sewel and Young, 1999).

INFLUENCE OF SALINITY VARIATIONS ON THE EMBRYONIC AND EARLY LARVAL DEVELOPMENT OF LONG-SPINED BLACK SEA URCHIN (DIADEMA SETOSUM)

Compared with the PBS and blank control groups, the percentages of 6- to 8-cell stage embryos on the third day, as well as blastula and morula stage embryos on the fifth day, were significantly lower in the antibody group.

An Exploration of the Impact of Anticentromere Antibody on Early-Stage Embryo