meiosis

noun
mei·​o·​sis | \mī-ˈō-səs \

Definition of meiosis 

1 : the presentation of a thing with underemphasis especially in order to achieve a greater effect : understatement

2 : the cellular process that results in the number of chromosomes in gamete-producing cells being reduced to one half and that involves a reduction division in which one of each pair of homologous chromosomes passes to each daughter cell and a mitotic division — compare mitosis

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Other Words from meiosis

meiotic \ mī-​ˈä-​tik \ adjective
meiotically \ -​ti-​k(ə-​)lē \ adverb

Examples of meiosis in a Sentence

Recent Examples on the Web

The experiment did not work in males, likely because spermatogonia go through normal mitotic cell division before meiosis, stymying HDR. Jon Cohen, Science | AAAS, "‘Gene drive’ passes first test in mammals, speeding up inheritance in mice," 10 July 2018 The chromosomes naturally swap DNA during meiosis, and during those exchanges the cell only allows HDR. Jon Cohen, Science | AAAS, "‘Gene drive’ passes first test in mammals, speeding up inheritance in mice," 10 July 2018

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

First Known Use of meiosis

1550, in the meaning defined at sense 1

History and Etymology for meiosis

New Latin, from Greek meiōsis diminution, from meioun to diminish, from meiōn less; akin to Sanskrit mīyate he diminishes

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Dictionary Entries near meiosis

meiofauna

meionite

meiophylly

meiosis

meiotaxy

Meir

Meissen

Statistics for meiosis

Last Updated

17 Sep 2018

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Time Traveler for meiosis

The first known use of meiosis was in 1550

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More Definitions for meiosis

meiosis

noun
mei·​o·​sis | \mī-ˈō-səs \
plural meioses\ -​ˌsēz \

Medical Definition of meiosis 

: the cellular process that results in the number of chromosomes in gamete-producing cells being reduced to one half and that involves a reduction division in which one of each pair of homologous chromosomes passes to each daughter cell and a mitotic division — compare mitosis sense 1

Other Words from meiosis

meiotic \ mī-​ˈät-​ik \ adjective
meiotically \ -​i-​k(ə-​)lē \ adverb

More from Merriam-Webster on meiosis

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Britannica.com: Encyclopedia article about meiosis

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