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

It has always the same globular shape; the same characteristic membrane; the same transparent germinal vesicle with its dark germinal spot.

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

They are nucleated cells, the nucleus going by the special name of the germinal vesicle and the nucleolus the germinal spot.

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

The ovule is a minute cell with a transparent membrane, within which is the yolk containing the germinal vesicle.

From The Four Epochs of Woman's Life; a study in hygiene by Anna M. (Anna Mary) Galbraith

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

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 Ernst Heinrich Philipp August Haeckel