RNA

noun
\ ˌär-(ˌ)en-ˈā How to pronounce RNA (audio) \

Definition of RNA

: any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities — compare messenger rna, ribosomal rna, transfer rna

First Known Use of RNA

1942, in the meaning defined above

History and Etymology for RNA

ribonucleic acid

Keep scrolling for more

Learn More about RNA

Statistics for RNA

Cite this Entry

“RNA.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/RNA. Accessed 15 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for RNA

RNA

noun

English Language Learners Definition of RNA

technical : a substance in the cells of plants and animals that helps make proteins

RNA

noun
\ ˌär-ˌen-ˈā How to pronounce RNA (audio) \

Medical Definition of RNA

: any of various nucleic acids that contain ribose and uracil as structural components and are associated with the control of cellular chemical activities

called also ribonucleic acid

— see messenger rna, ribosomal rna, transfer rna

Comments on RNA

What made you want to look up RNA? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Words Used by Nabokov Quiz

  • image1676440788
  • Choose the best definition or synonym for the word in bold: "There are some eructations that sound like cheers—at least, mine did." Lolita
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!