telomere

noun
telo·​mere | \ˈte-lə-ˌmir, ˈtē- \

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

Practitioners measure things like telomeres—the protective caps on chromosomes that supposedly reveal one’s biological age—to locate the source of an ailment or those last stubborn pounds. Jancee Dunn, Vogue, "The Future of Dieting Is Here—And it Has Nothing to do With Calorie Counting," 29 Oct. 2018 Still, blank spots remain at the ends of chromosomes (called telomeres), as well as at the axis points where the two arms of a chromosome meet (called centromeres). Kyle Peterson, WSJ, "Cracking the Code of Life—at Light Speed," 27 Apr. 2018 The only thing protecting our genes are the endcaps, called telomeres. Avery Thompson, Popular Mechanics, "Scientists Get Their First Look at the Enzyme That Could Help Battle Aging," 27 Apr. 2018 As evidence, Geronimus points to her 2010 study, which found that telomeres — chromosomal markers of aging — of middle-age black women were on average seven and a half years older than those of white women. NBC News, "How training doctors in implicit bias could save the lives of black mothers," 11 May 2018 The problem is that when our telomeres run out, our cells can’t replicate any more. Avery Thompson, Popular Mechanics, "Scientists Get Their First Look at the Enzyme That Could Help Battle Aging," 27 Apr. 2018 One study shows that those who get sweaty on the reg (at least 14 minutes per day) have longer telomeres — protective bumpers on the ends of our DNA strands, which naturally shorten over time. Krista Bennett Demaio, Cosmopolitan, "9 Beauty Fails That Mess With Your Skin (and How to Fix Them)," 2 Jan. 2015 There are dietary interventions that can help keep our telomeres as long as possible. Sheah Rarback, miamiherald, "How to stay healthy: Eat well, sleep well and keep moving | Miami Herald," 5 Mar. 2018 Another interesting finding from the studies of the brothers: Kelly’s telomeres, which are the endcaps of chromosomes that shorten as a person ages, became significantly longer, NASA said. Felicia Gans, BostonGlobe.com, "NASA study finds ‘space genes’ after astronaut’s year in orbit," 15 Mar. 2018

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

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Last Updated

15 Nov 2018

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The first known use of telomere was in 1940

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More Definitions for telomere

telomere

noun
telo·​mere | \ˈtel-ə-ˌmi(ə)r, ˈtēl- \

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 \ adjective

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