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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Refined mRNA technology and gene sequencing becoming faster and cheaper has put cancer vaccines back into clinical trials, Dougan said. Kaitlin Sullivan, NBC news, 11 Aug. 2025 Since the 1960s, there was consensus around the critical role that mRNA plays as a translator of sorts in protein synthesis—the process responsible for almost all cellular functions in the human body. Joshua P. Cohen, Forbes.com, 6 Aug. 2025 Moderna staked its entire identity around mRNA, while BioNTech saw it as one piece of a broader portfolio focused on immunology and oncology. Angelica Peebles, CNBC, 31 July 2025 Some experimental mRNA vaccines, for instance, can introduce the immune system to 20 different viruses. Claire Bugos, Verywell Health, 29 July 2025 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 21 Aug. 2025.

Medical Definition

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