polar body

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polar body

n.
Either of two small cells produced during the first and second meiotic divisions in the development of an oocyte, containing little cytoplasm and eventually degenerating.

polar body

n
(Biology) physiol a tiny cell containing little cytoplasm that is produced with the ovum during oogenesis when the oocyte undergoes meiosis

po′lar bod′y


n.
one of the minute cells arising from the unequal meiotic divisions of the ovum at or near the time of fertilization.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.polar body - a small cell containing little cytoplasm that is produced along with the oocyte and later discarded
cell - (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in higher plants and animals
References in periodicals archive ?
Professor Alan Handyside, Director of The London Bridge Fertility, Gynaecology and Genetics Centre, London, UK, and colleagues from eight countries undertook a proof of principle study of a novel method of screening polar bodies, small cells that are the by-product of oocyte development.
The fertilized egg extrudes the first and second polar bodies at 8-10 min, and then the zygote begins cleavage at 15-20 min.
From these polar bodies in the cytoplasm protein fibers form which correctly distribute the duplicated chromosome set to the newly forming daughter cells.