polar body

noun Cell Biology.
one of the minute cells arising from the unequal meiotic divisions of the ovum at or near the time of fertilization.

Origin:
1885–90

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Collins
World English Dictionary
polar body
 
n
physiol a tiny cell containing little cytoplasm that is produced with the ovum during oogenesis when the oocyte undergoes meiosis

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

polar body n.
Either of two small cells formed by the ovum during its maturation, the first usually released just before ovulation and the second not until after the ovum has been discharged from the ovary and penetrated by a sperm cell.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
polar body  
One of the small cells that are produced during the development of an oocyte and ultimately degenerate. A polar body contains one of the nuclei derived from the first or second meiotic division but little or no cytoplasm. See Note at oogenesis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The smaller cell from this division is a second polar body.
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