: one haploid set of chromosomes with the genes they contain
broadly : the genetic material of an organism compare proteome

Examples of genome in a Sentence

Recent Examples on the Web
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After reviewing the work, Feng Zhang, a CRISPR genome-editing pioneer and professor at MIT and the Broad Institute, said the finding warrants further investigation. — Neetika Walter, Interesting Engineering, 23 Sep. 2026 Sequencing a genome from old, rootless hair was once impossible, because the DNA within them has broken into very short segments. — Julian Lucas, New Yorker, 21 Sep. 2026 Over time, this has led retrotransposons to make up large proportions of a host genome in some cases; for example, nearly half of the human genome is retrotransposons. — Jake Buehler, Quanta Magazine, 21 Sep. 2026 See All Example Sentences for genome

Word History

Etymology

German Genom, from Gen gene + -om (as in Chromosom chromosome)

First Known Use

1926, in the meaning defined above

Time Traveler
The first known use of genome was in 1926

Browse Nearby Words

Cite this Entry

“Genome.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/genome. Accessed 2 Oct. 2026.

Medical Definition

: one haploid set of chromosomes with the genes they contain
broadly : the genetic material of an organism
The idea behind sequencing an organism's genome—decoding, letter by letter, the message contained in every last one of its genes—is that it would tell us a lot about how the organism works. —Lori Oliwenstein, Discover

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