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See also: adénosine


Skeletal formula of adenosine.
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From German Adenosin, corresponding to aden(ine) + (rib)os(e) +‎ -ine.


  • (UK) IPA(key): /əˈdɛnə(ʊ)siːn/
  • (US) IPA(key): /əˈdɛnəˌsin/, /əˈdɛnəsən/



adenosine (plural adenosines)

  1. (biochemistry, genetics, organic chemistry) A nucleoside derived from adenine and ribose, found in striated muscle tissue. [from 20th c.]
    • 2001, Leslie Iversen, Drugs: A Very Short Introduction, Oxford, page 82:
      Caffeine acts as an antagonist at receptors in the brain for one of the chemical messengers called adenosine.
    • 2017, Matthew Walker, Why We Sleep, Penguin, published 2018, page 27:
      Think of adenosine as a chemical barometer that continuously registers the amount of elapsed time since you woke up this morning.
    • 2017, BioWare, Mass Effect: Andromeda, Redwood City: Electronic Arts, →OCLC, PC, scene: Hyperion:
      SAM: Readings confirmed. Based on the levels of adenosine in your system, the neural implant is functioning properly.
    • 2022 June 24, Oliver Whang, “The Sleep Debt Collector Is Here”, in The New York Times[1], →ISSN:
      Adenosine levels can be quickly righted after a few nights of good sleep, however.

Derived terms