aden·​o·​sine | \ ə-ˈde-nə-ˌsēn How to pronounce adenosine (audio) , -sən \

Definition of adenosine

: a nucleoside C10H13N5O4 that is a constituent of RNA and yields adenine and ribose on hydrolysis

Examples of adenosine in a Sentence

Recent Examples on the Web So during a coffee nap, your brain clears out the adenosine and makes room for caffeine to move in. Sonya Collins, Fortune, 27 Apr. 2022 Blocking adenosine signaling with a drug had the same effect on healthy mice. Mo Costandi, Scientific American, 29 June 2017 However, the analog's molecular makeup differs from real adenosine just enough to grind the copying process to a halt. Lila Thulin, Smithsonian Magazine, 13 May 2020 The drug Remdesivir is basically an altered version of the natural building block adenosine – which is essential for DNA and RNA. Katherine Seley-radtke, The Conversation, 6 May 2020 The cream uses peach and apricot extracts and shea butter to nourish dry skin, and adenosine, an anti-wrinkle ingredient, to smooth the hands. Jessica Kasparian, USA TODAY, 4 Mar. 2020 The findings were controversial until scientists uncovered a family of enzymes called adenosine deaminases acting on RNA (ADARs). Sara Reardon, Scientific American, 5 Feb. 2020 Another theory holds that caffeine acts as a diuretic by working on receptors for the neurotransmitter adenosine in a way that changes your body’s sodium and fluid balance. Korin Miller, SELF, 6 Mar. 2019 The longer caffeine blocks adenosine, the greater the quantity of adenosine build up in your system. Mayo Oshin, Quartzy, 19 June 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'adenosine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of adenosine

circa 1909, in the meaning defined above

History and Etymology for adenosine

borrowed from German Adenosin, blend of Adenin adenine and Ribose ribose

Learn More About adenosine

Time Traveler for adenosine

Time Traveler

The first known use of adenosine was circa 1909

See more words from the same year

Dictionary Entries Near adenosine



adenosine 3′,5′-monophosphate

See More Nearby Entries 

Statistics for adenosine

Last Updated

4 May 2022

Cite this Entry

“Adenosine.” Dictionary, Merriam-Webster, Accessed 20 May. 2022.

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

More Definitions for adenosine


aden·​o·​sine | \ ə-ˈden-ə-ˌsēn, -sən How to pronounce adenosine (audio) \

Medical Definition of adenosine

: a nucleoside C10H13N5O4 that is a constituent of RNA yielding adenine and ribose on hydrolysis


Test Your Vocabulary

Great Words for Scrabble

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
True or False

Test your knowledge - and maybe learn something along the way.

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

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