telo·​mere | \ ˈte-lə-ˌmir How to pronounce telomere (audio) , ˈtē- How to pronounce telomere (audio) \

Definition of telomere

: the natural end of a eukaryotic chromosome composed of a usually repetitive DNA sequence and serving to stabilize the chromosome

Examples of telomere in a Sentence

Recent Examples on the Web Each time a cell divides to drive growth and repair, its telomeres shorten. Simon Makin, Scientific American, 1 Apr. 2020 But extremely short and extremely long telomeres are seen as a predictor of cancer risk. David Grossman, Popular Mechanics, 11 Apr. 2019 Telocyte’s gene therapy would aim to rebuild those glial telomeres. Katherine Ellen Foley, Quartz, 14 Jan. 2020 A year in space caused DNA damage; gene expression changes; a thickening of the retina; thickening of Kelly's carotid artery; shifts in gut microbes; reduced cognitive abilities; and a structural change at the ends of chromosomes called telomeres. Ashley Strickland, CNN, 20 Dec. 2019 The first deviation was the length of telomeres on Scott's DNA grew shorter than expected and his gene expression also changed. John Wenz, Popular Mechanics, 23 Oct. 2019 With every cell division, these protective telomeres grew shorter, hastening the plants’ inevitable genetic meltdown. Quanta Magazine, 5 Aug. 2019 As cells age, their telomeres shorten, and chromosomes in turn stop the cell from dividing further, Chen says. Ryan W. Miller, USA TODAY, 20 Nov. 2019 In a nutshell, telomeres are caps found at the ends of chromosomes that protect DNA. Cynthia Sass, Mph,, 1 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'telomere.' 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 telomere

1940, in the meaning defined above

History and Etymology for telomere

International Scientific Vocabulary

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Time Traveler for telomere

Time Traveler

The first known use of telomere was in 1940

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Cite this Entry

“Telomere.” Dictionary, Merriam-Webster, Accessed 17 Oct. 2021.

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More Definitions for telomere


telo·​mere | \ ˈtel-ə-ˌmi(ə)r How to pronounce telomere (audio) , ˈtēl- How to pronounce telomere (audio) \

Medical Definition of telomere

: the natural end of a eukaryotic chromosome composed of a usually repetitive DNA sequence and serving to stabilize the chromosome

Other Words from telomere

telomeric \ ˌtel-​ə-​ˈmer-​ik How to pronounce telomere (audio) \ adjective


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