nucleoside

[ noo-klee-uh-sahyd, nyoo- ]

/ ˈnu kli əˌsaɪd, ˈnyu- /

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noun Biochemistry.

any of the class of compounds derived by the hydrolysis of nucleic acids or nucleotides, consisting typically of deoxyribose or ribose combined with adenine, guanine, cytosine, uracil, or thymine.

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Origin of nucleoside

First recorded in 1910–15; nucle(o) + -ose² + -ide

Words nearby nucleoside

nucleon number, nucleophilic, nucleoplasm, nucleoprotein, nucleosidase, nucleoside, nucleoside analogue, nucleosome, nucleosynthesis, nucleotide, nucleotides

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

British Dictionary definitions for nucleoside

nucleoside

/ (ˈnjuːklɪəˌsaɪd) /

noun

biochem a compound containing a purine or pyrimidine base linked to a sugar (usually ribose or deoxyribose)

Word Origin for nucleoside

C20: from nucleo- + -ose ² + -ide

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for nucleoside

nucleoside

[ nōō′klē-ə-sīd′ ]

Any of various compounds consisting of a sugar, usually ribose or deoxyribose, and a nitrogen base (a purine or pyrimidine). Nucleosides are constituents of the nucleotides of nucleic acids. Adenosine and thymidine are nucleosides.