Blastoderm
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.
Historical Examples
The British Woodlice Wilfred Mark Webb
Form and Function E. S. (Edward Stuart) Russell
The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume IV (of 4) Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume 1 Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume 1 Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume 1 Francis Maitland Balfour
The Works of Francis Maitland Balfour, Volume 1 Francis Maitland Balfour
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
blas’to·der’mal or blas’to·der’mic or blas’to·der·mat’ic (-dər-māt’ĭk) adj.
Read Also:
- Blastodermic-vesicle
blastodermic vesicle Historical Examples The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour The Works of Francis Maitland Balfour, Volume III (of 4) Francis Maitland Balfour
- Blastodisc
the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles. noun another name for blastoderm
- Blastodisk
the blastula that forms as a flattened sphere on top of the yolk in the yolk-laden eggs of birds and reptiles.
- Blastoff
the launching of a rocket, guided missile, or spacecraft. Historical Examples The Colors of Space Marion Zimmer Bradley A World Called Crimson Darius John Granger Wind Charles Louis Fontenay Equation of Doom Gerald Vance Atom Drive Charles Louis Fontenay Equation of Doom Gerald Vance Gold in the Sky Alan Edward Nourse The Judas Valley Gerald […]
- Blastogenesis
reproduction by budding. the theory of the transmission of hereditary characters by germ plasm. noun the theory that inherited characteristics are transmitted only by germ plasm See also pangenesis asexual reproduction, esp budding blas’to·ge·net’ic (-jə-nět’ĭk) or blas’to·gen’ic (-jěn’ĭk) adj.