germinal vesicle

American  

noun

Embryology.

1. the large, vesicular nucleus of an ovum before the polar bodies are formed.

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germinal vesicle British  

noun

1. biology the large nucleus of an oocyte before it develops into an ovum

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Etymology

Origin of germinal vesicle

First recorded in 1850–55

Example Sentences

In case of horns of cattle, which when inherited must depend on germinal vesicle, obviously no effect till cattle full-grown.

From The Foundations of the Origin of Species Two Essays written in 1842 and 1844 by Darwin, Francis, Sir

The germinal vesicle is so simple that it may be defined in a line.

From Essays: Scientific, Political, & Speculative, Vol. I by Spencer, Herbert

As early as 1791 Poli had seen the germinal vesicle in the eggs of molluscs, but the first adequate account was given by Purkinje.

From Form and Function A Contribution to the History of Animal Morphology by E. S. (Edward Stuart) Russell

Either the ovum was a cell and the germinal vesicle its nucleus, or else the germinal vesicle was itself a cell within the larger cell of the ovum and the germinal spot was its nucleus.

From Form and Function A Contribution to the History of Animal Morphology by E. S. (Edward Stuart) Russell

These began in 1875 and following years with a careful examination of the behaviour of the germinal vesicle in the maturation and fertilization of the ovum.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3 "Electrostatics" to "Engis" by Various