aden·o·sine | \ə-ˈde-nə-ˌsēn, -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

Scientists point the finger at the brain chemical adenosine for the endurance-sapping effects of mental fatigue. Alex Hutchinson, Outside Online, "Here’s What We Know About Mental Fatigue," 10 July 2018 But diltiazem was out of stock, and when two other drugs — adenosine and metoprolol — didn’t work, Mr. Alsina was admitted overnight. Katie Thomas, New York Times, "Emergency Rooms Run Out of Vital Drugs, and Patients Are Feeling It," 1 July 2018 Sleep pressure – our urge to sleep – is thought to arise because of the gradual release of adenosine in the brain. Linda Geddes, Smithsonian, "A Counterintuitive Idea for Treating Severe Depression: Stay Awake," 23 Jan. 2018 Also, beta-glucans and adenosine plump and smooth my eye area for brighter-looking eyes! Kathleen Hou, The Cut, "How I Used Korean Skin Care to Treat My Hormonal Acne," 9 Mar. 2018 Oshinsky explained that metabolizing large amounts of alcohol produces lots of acetate — which, in turn, can lead to high levels of adenosine., "Tips to avoid a Super Bowl hangover," 4 Feb. 2018 Ramus was born with adenosine deaminase deficiency (ADA), a condition also known as bubble boy disease that affects the immune system. Paul A. Smith, Milwaukee Journal Sentinel, "Smith: National hunt takes pulse of ruffed grouse, woodcock populations," 27 Oct. 2017 That means adenosine, a chemical that builds up in our brains throughout the day and gradually makes us sleepy, has more time to accrue and lull the body naturally to slumberland. Olga Khazan, The Atlantic, "Better Than Ambien," 24 Oct. 2017 Drew’s research has shown that cooling is likely regulated by levels of adenosine in the brain. Christie Wilcox, National Geographic, "Some Animals Don't Actually Sleep for the Winter, and Other Surprises About Hibernation," 12 Oct. 2017

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.

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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

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Time Traveler for adenosine

The first known use of adenosine was circa 1909

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aden·o·sine | \ə-ˈden-ə-ˌsēn, -sən \

Medical Definition of adenosine 

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

Comments on adenosine

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to reject or criticize sharply

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