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

See Examples For:

germinal vesicle

This germinal vesicle divides, and one moiety is budded off from the ovum.

From Text Book of Biology, Part 1: Vertebrata by Wells, H. G. (Herbert George)

Cock's tread, "The opaque speck or germinal vesicle in the surface of the yolk in an impregnated egg."

From The Closet of Sir Kenelm Digby Knight Opened by MacDonell, Anne

The nucleus of the ovum, or the germinal vesicle, is thus pressed right to the surface of the globular ovum, and is embedded there in a small quantity of transparent matter, the so-called white yelk.

From The Evolution of Man — Volume 1 by Haeckel, Ernst Heinrich Philipp August

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

In the upper part of the yelk is the transparent round germinal vesicle, which corresponds to the nucleus.

From The Evolution of Man — Volume 1 by Haeckel, Ernst Heinrich Philipp August