blastula

Definitions

  • WordNet 3.6
    • n 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
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Webster's Revised Unabridged Dictionary
    • n Blastula (Biol) That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
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Century Dictionary and Cyclopedia
    • n blastula In embryology: An embryo of one of the Metazoa, in the stage in which it consists of a sac formed of a single layer of cells.
    • n blastula In Haeckel′ s vocabulary of embryology, same as blastosphere, .
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Etymology

Webster's Revised Unabridged Dictionary
NL., dim. of Gr. blasto`s a sprout

Usage

In literature:

The gastrula, finally, is the two-layered sac formed from the blastula, typically by invagination of its wall.
"Form and Function" by E. S. (Edward Stuart) Russell
Is there any considerable difference between the size of the egg and the size of the blastula and gastrula?
"A Guide for the Study of Animals" by Worrallo Whitney
Consider its mode of division, and the formation of the blastula, gastrula, and germinal layers.
"The Biological Problem of To-day" by Oscar Hertwig
When the blastula is oval and free-swimming the inner mass is formed by unipolar immigration from the hinder pole.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2" by Various
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In news:

Here's the video for Count Blastula 's 'A Way from Me'.
Count Blastula Members of Count Blastula are: Adam Fisher on acoustic guitar, Jim Dunham on drums, Max McKee on bass and painter Fletcher Crangle.
Hear the name Count Blastula , and you might think it's a heavy metal band.
Blastula ': Flaming Lips documentary debuts at deadCENTER.
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