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rRNA

noun

ˌär-(ˌ)är-(ˌ)en-ˈā How to pronounce rRNA (audio)
: ribosomal rna

Word History

First Known Use

1962, in the meaning defined above

Time Traveler
The first known use of rRNA was in 1962

Browse Nearby Words

-rrhoea
rRNA
RRT
See all Nearby Words

Cite this Entry

“RRNA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rRNA. Accessed 26 Nov. 2025.

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