polar body

noun

Definition of polar body 

: a cell that separates from an oocyte during meiosis and that contains a nucleus produced in the first or second meiotic division and very little cytoplasm

Examples of polar body in a Sentence

Recent Examples on the Web

The extra chromosome material left over from the egg’s final stage of division remains in a smaller sphere called a polar body. Marissa Fessenden, Smithsonian, "Researchers Mature Human Eggs in the Lab for the First Time," 10 Feb. 2018 Typically, these polar bodies break down in the woman’s body. Marissa Fessenden, Smithsonian, "Researchers Mature Human Eggs in the Lab for the First Time," 10 Feb. 2018 This may mean that too much cytoplasm — the fluid inside cells — ended up in the polar body. Marissa Fessenden, Smithsonian, "Researchers Mature Human Eggs in the Lab for the First Time," 10 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'polar body.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of polar body

1882, in the meaning defined above

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The first known use of polar body was in 1882

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More Definitions for polar body

polar body

noun

Medical Definition of polar body 

: a cell that separates from an oocyte during meiosis:

a : one containing a nucleus produced in the first meiotic division

called also first polar body

b : one containing a nucleus produced in the second meiotic division

called also second polar body

More from Merriam-Webster on polar body

Britannica.com: Encyclopedia article about polar body

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