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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Why Moderna Is Exploring Quantum Computing Messenger RNA (or mRNA) is a hugely promising technology for future vaccines and therapies, as was demonstrated during the COVID-19 pandemic. Amy Feldman, Forbes.com, 23 July 2025 Around a decade ago, a breakthrough came when researchers found that lipid nanoparticles could effectively transport the incredibly fragile mRNA into the body without it being broken down in the bloodstream. New Atlas, 18 July 2025 An mRNA vaccine uses a molecule called messenger RNA (mRNA) to instruct cells in the body to produce a protein. Raul A. Reyes, Newsweek, 22 Jan. 2025 The senior managers of Pfizer’s plant in Puurs, Belgium—one of two that Pfizer chose in March 2020 to produce the Pfizer-BioNTech mRNA vaccine for Covid-19—have demonstrated that there is. Arnoud De Meyer, Harvard Business Review, 25 June 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 29 Jul. 2025.

Medical Definition

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