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

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Example Sentences

See Examples For:

germinal vesicle

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

After the ovum has finished its growth, and elaborated the yolk within itself, a peculiar change occurs in the small area free from yolk-- the animal pole, in which the germinal vesicle lies.

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

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 Anne MacDonell

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

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

The subsequent behavior of the pollen cell, its division and its fertilization of the germinal vesicle or oosphere, leave no doubt as to its analogy with the microspore of vascular cryptogams.

From Scientific American Supplement, No. 531, March 6, 1886 by Various

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