blastoderm
Americannoun
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the primitive layer of cells that results from the segmentation of the ovum.
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the layer of cells forming the wall of the blastula, and in most vertebrates enclosing a cavity or a yolk mass.
noun
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the layer of cells that surrounds the blastocoel of a blastula
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a flat disc of cells formed after cleavage in a heavily yolked egg, such as a bird's egg
Other Word Forms
Etymology
Origin of blastoderm
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Such words as "blastoderm", "sindoc," "peris," "parasang," "sarcenet," "teazel," "nullah," "cantatrice," "barracan," "sistrum," writhed and hissed in her verses.
From Time Magazine Archive
This is the result of the large quantity of the yolk, and the position the latter assumes in relation to the blastoderm.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6 "Celtes, Konrad" to "Ceramics" by Various
Blastem: a nucleated protoplasmic layer preceding the blastoderm.
From Explanation of Terms Used in Entomology by John. B. Smith
When the egg leaves the ovary the nucleus disappears, leaving behind it this rudiment of the blastoderm, which rapidly grows and increases in size.
From Form and Function A Contribution to the History of Animal Morphology by E. S. (Edward Stuart) Russell
The origin and development of the blastoderm or germinal disc has nothing to do with recapitulation of the phylogeny.
From Naturalism And Religion by Rudolf Otto
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