mo·​sa·​i·​cism | \ mō-ˈzā-ə-ˌsi-zəm How to pronounce mosaicism (audio) \

Definition of mosaicism

: the condition of possessing cells of two or more different genetic constitutions

Examples of mosaicism in a Sentence

Recent Examples on the Web This kind of mosaicism is rare, affecting about 1 in 15,000 people. Claire Ainsworth, Scientific American, 22 Oct. 2018 Sultan also told the woman the test results were likely due to a rare condition called mosaicism, where a person can have two sets of DNA in their body, court records state. Washington Post, 1 Dec. 2021 Doing it later can mean some cells but not others will be edited — a less ideal outcome known as mosaicism. Megan Molteni, STAT, 23 July 2021 There are three types of Down syndrome: translocation, mosaicism and trisomy 21. Cnn Editorial Research, CNN, 28 May 2021 That problem, known as mosaicism, needs to be solved to produce useful animal models. Gary Stix, Scientific American, 15 Nov. 2016 Individual embryos also had cells that were edited in different ways, a concept called mosaicism. Andrew Joseph, STAT, 3 Sep. 2020 Findings made in the past few years reveal that human skin, oesophageal and lung cells show high levels of mosaicism. Kendall Powell, Scientific American, 22 Jan. 2020 But the key, says Martincorena, is that the latest analysis demonstrated that mosaicism is present across a wide array of tissues. Heidi Ledford, Scientific American, 14 June 2019 See More

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

First Known Use of mosaicism

1920, in the meaning defined above

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The first known use of mosaicism was in 1920

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Dictionary Entries Near mosaicism

mosaic inheritance



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Cite this Entry

“Mosaicism.” Dictionary, Merriam-Webster, Accessed 13 Aug. 2022.

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More Definitions for mosaicism


mo·​sa·​i·​cism | \ mō-ˈzā-ə-ˌsiz-əm How to pronounce mosaicism (audio) \

Medical Definition of mosaicism

: the condition of possessing cells of two or more different genetic constitutions

More from Merriam-Webster on mosaicism Encyclopedia article about mosaicism


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