hypoblast

American  

[hahy-puh-blast] / ˈhaɪ pəˌblæst /

noun

Embryology.

1. the endoderm.

2. the cells entering into the inner layer of a young gastrula, capable of becoming endoderm and, to a certain extent, mesoderm.

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hypoblast British  

/ ˈhaɪpəˌblæst /

noun

1. Also called: endoblast.  embryol the inner layer of an embryo at an early stage of development that becomes the endoderm at gastrulation

2. a less common name for endoderm

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Other Word Forms

• hypoblastic adjective

Etymology

Origin of hypoblast

First recorded in 1820–30; hypo- + -blast

Example Sentences

They designed stem cell models to study formation of yolk sac founders, called hypoblast.

From Science Daily

The layer of cells lining the cavity of the sack is known as the hypoblast, and gives rise chiefly to the cells lining the alimentary canal of the future animal.

From Project Gutenberg

This process must be regarded as equivalent to the first stage of invagination, the yolk being surrounded by hypoblast cells or their nuclei.

From Project Gutenberg

Though it would enforce the argument, I must, for brevity's sake, pass over the analogous evolution of that introverted layer, or hypoblast, out of which the alimentary canal and attached organs arise.

From Project Gutenberg

Entoderm: the innermost germ layer of the embryo, from which are derived the epithelium of the alimentary canal and accessory structures: = endoderm and hypoblast.

From Project Gutenberg