mRNA

noun

ˈem-ˈär-ˈen-ˈā 

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

The panel has also raised questions about the safety of mRNA Covid vaccines, and Kennedy has pulled millions of dollars in funding for the technology. — Chelsea Cirruzzo, STAT, 10 July 2026

Moderna, which partnered with CEPI to develop the first mRNA COVID vaccine, also received CEPI funding to develop an mRNA vaccine—which has the advantage of speed, as shown during COVID—against Bundibugyo. — Alice Park, Time, 2 July 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

Word History

First Known Use

1961, in the meaning defined above

Phrases Containing mRNA

• mRNA vaccine

Medical Definition

mRNA

noun

ˈem-ˈär-ˈen-ˈā 

: messenger rna