gua·​no·​sine ˈgwä-nə-ˌsēn How to pronounce guanosine (audio)
: a nucleoside C10H13N5O5 composed of guanine and ribose

Examples of guanosine in a Sentence

Recent Examples on the Web The message these scientists describe includes a quick-and-dirty primer on the nature of human life itself, from the four base chemicals of DNA—adenosine, cytidine, guanosine, and thymidine—to the essential amino acids and glucose that help to power life itself. Caroline Delbert, Popular Mechanics, 4 Apr. 2022 But a problem arises in people like Piqueras, whose TLR7 receptors can’t distinguish between genetic material in potentially dangerous viruses, and guanosine, a nucleic acid found in the body’s own RNA. Isabella Cueto, STAT, 18 June 2022 Although not one of the canonical RNA bases, inosine is read by the cell’s protein-translation machinery as the familiar guanosine. Sara Reardon, Scientific American, 5 Feb. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'guanosine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


guan- (as in guanine) + ribose + -ine

First Known Use

1909, in the meaning defined above

Time Traveler
The first known use of guanosine was in 1909

Dictionary Entries Near guanosine

Cite this Entry

“Guanosine.” Dictionary, Merriam-Webster, Accessed 24 Jun. 2024.

Medical Definition


gua·​no·​sine ˈgwän-ə-ˌsēn How to pronounce guanosine (audio)
: a nucleoside C10H13N5O5 composed of guanine and ribose
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