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 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, "Is Coffee Actually Dehydrating?," 6 Mar. 2019 The longer caffeine blocks adenosine, the greater the quantity of adenosine build up in your system. Mayo Oshin, Quartzy, "Five scientifically proven ways to fall asleep faster," 19 June 2019 This temporary and localized fuel shortage triggers a rise in adenosine levels, which in turn blocks the release of neurotransmitters like dopamine. Alex Hutchinson, Outside Online, "Here’s What We Know About Mental Fatigue," 10 July 2018 Caffeine can block different adenosine receptors in your body, tricking your system into thinking that it’s not time to go to bed yet. Korin Miller, SELF, "7 Mistakes You Make Right Before Bed That Are Ruining Your Sleep," 28 Nov. 2018 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

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

Time Traveler

The first known use of adenosine was circa 1909

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Statistics for adenosine

Cite this Entry

“Adenosine.” Dictionary, Merriam-Webster, Accessed 20 Feb. 2020.

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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

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