• synonyms


[sit-i-deen, -din, sahy-ti-]
noun Biochemistry.
  1. a white crystalline powder, C9H13N3O5, that is a ribonucleoside consisting of d-ribose and cytosine.
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Origin of cytidine

< German Cytidin (1910), equivalent to cyt- cyto- + -idin suffix of organic compounds
Related formscyt·i·dyl·ic [sit-i-dil-ik, sahy-ti-] /ˌsɪt ɪˈdɪl ɪk, ˌsaɪ tɪ-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for cytidine


  1. biochem a nucleoside formed by the condensation of cytosine and ribose
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Word Origin

C20: from cyto- + -ide + -ine ²
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

cytidine in Medicine


  1. A white crystalline nucleoside composed of one molecule each of cytosine and ribose.cytosine ribonucleoside
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.