plural mRNAs
: messenger rna
Microarrays that identify thousands of active genes at a time are now a standard tool for biologists. They detect the mRNAs produced by active genes.New Scientist

Examples of mRNA in a Sentence

Recent Examples on the Web
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The deal accelerated Moderna’s ascent, helping bring billions in funding and of course the life-saving mRNA Covid vaccines. Jason Mast, STAT, 29 June 2026 The Covid vaccines also use mRNA technology. Stephanie Stephens, USA Today, 26 June 2026 But vaccines made with the Nobel Prize-winning mRNA technology are faster to manufacture than other types — something experts say might help if the shape-shifting flu virus mutates in a way that requires suddenly brewing new doses to match. Lauran Neergaard, Los Angeles Times, 19 June 2026 The Food and Drug Administration's top vaccine advisory committee voted unanimously yesterday to recommend Moderna's new mRNA influenza vaccine for adults 50 and over. Brittney Melton, NPR, 19 June 2026 See All Example Sentences for mRNA

Word History

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of mRNA was in 1961

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Cite this Entry

“MRNA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mRNA. Accessed 5 Jul. 2026.

Medical Definition

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