blastoderm

[ blas-tuh-durm ]

/ ˈblæs təˌdɜrm /

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noun Embryology.

the primitive layer of cells that results from the segmentation of the ovum.

the layer of cells forming the wall of the blastula, and in most vertebrates enclosing a cavity or a yolk mass.

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Origin of blastoderm

First recorded in 1855–60; blasto- + -derm

OTHER WORDS FROM blastoderm

blas·to·der·mic, blas·to·der·mat·ic, adjective

Words nearby blastoderm

blastochyle, blastocoel, blastocyst, blastocyte, blastocytoma, blastoderm, blastodermic vesicle, blastodisc, blastodisk, blastoff, blastogenesis

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use blastoderm in a sentence

For hardening the blastoderm I have employed, as usual, chromic acid, and also gold chloride.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
If the outlines only of the cells are to be examined, a very short immersion (half a minute) of the blastoderm in a half per cent.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
My observations begin with the blastoderm of a freshly laid egg.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
The changes which the blastoderm undergoes during the first three or four hours of incubation are not very noticeable.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour

I have already spoken of the gradation of the hypoblast at the edge of the blastoderm into white yolk.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour

British Dictionary definitions for blastoderm

blastoderm

/ (ˈblæstəʊˌdɜːm) /

noun embryol

the layer of cells that surrounds the blastocoel of a blastula

a flat disc of cells formed after cleavage in a heavily yolked egg, such as a bird's egg

Also called: blastodisc

Derived forms of blastoderm

blastodermic, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for blastoderm

blastoderm

[ blăs′tə-dûrm′ ]

The layer of cells formed by the cleavage of a fertilized mammalian egg, which later divides into the three germ layers from which the embryo develops.germinal membrane germ membrane

Other words from blastoderm

blas′to•der′mal null null adj.