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Definition of Blastoderm
1. Noun. A layer of cells on the inside of the blastula.
Generic synonyms: Layer
Derivative terms: Blastodermatic, Blastodermic
Definition of Blastoderm
1. n. The germinal membrane in an ovum, from which the embryo is developed.
Definition of Blastoderm
1. Noun. (embryology) The germination point in an ovum from whence the embryo develops. ¹
¹ Source: wiktionary.com
Definition of Blastoderm
1. [n -S]
Medical Definition of Blastoderm
1. In many eggs with a large amount of yolk, cell division (cleavage) is restricted to a superficial layer of the fertilized egg (meroblastic cleavage). This layer is termed the blastoderm. In birds it is a flat disc of cells at one pole of the egg and in insects an outer layer of cells surrounding the yolk mass. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)
Lexicographical Neighbors of Blastoderm
Literary usage of Blastoderm
Below you will find example usage of this term as found in modern and/or classical literature:
1. Quain's Elements of Anatomy by Jones Quain, Edward Albert Sharpey-Schäfer, George Dancer Thane (1890)
"The primitive groove is regarded as a linear prolongation of this thickened edge
of the blastoderm towards the centre of the blastoderm (Balfour), ..."
2. A Text-book of Zoology by Thomas Jeffery Parker, William Aitcheson Haswell (1921)
"(A—Q after Epiboly takes place as in Elasmobranchs, the blastoderm ... arises as
an elevation growing forwards from the thickened edge of the blastoderm, ..."
3. The Development of the Chick: An Introduction to Embryology by Frank Rattray Lillie (1908)
"Zones of the blastoderm. The following zones may be recognized in the blastoderm
... The area vitellina includes all of the blastoderm peripheral to the ..."
4. The Monthly Microscopical Journal: Transactions of the Royal Microscopical (1872)
"BUSCONI* was the first to describe the segmentation of the blastoderm of the egg
... 7 A and 7 B.—Showing the blastoderm of different stages in the profile. ..."
5. Journal of the Royal Microscopical Society by Royal Microscopical Society, London (1882)
"Preparing blastoderm of the Chick.—C. Koller,* who has taken up this subject in
order to decide some disputed points in the embryology of the chick, ..."
6. Guide to the Study of Insects, and a Treatise on Those Injurious and by Alpheus Spring Packard (1870)
"The first change is the formation of the "primitive streak," or the splitting of
the blastoderm, which is due to a local multiplication of the cellules ..."
7. A Treatise on Comparative Embryology by Francis Maitland Balfour (1885)
"is less rapid in the immediate neighbourhood of the embryonic part of the blastoderm
A, than elsewhere. As a consequence of this, that part of the edge, ..."
8. Text-book of the Embryology of Invertebrates by Eugen Korschelt, Karl Heider, Edward Laurens Mark, William McMichael Woodworth, Matilda Bernard, Martin Fountain Woodward (1899)
"D-7'1) show that an accumulation of blastoderm-cells at first lies on the dorsal
side of the egg, while at a later stage only a few cells are perceptible in ..."
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