[sit-i-deen, -din, sahy-ti-]
a white crystalline powder, C9H13N3O5, that is a ribonucleoside consisting of d-ribose and cytosine.
Origin of cytidine
< German Cytidin (1910), equivalent to cyt- cyto- + -idin suffix of organic compounds
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
biochem a nucleoside formed by the condensation of cytosine and ribose
Word Origin for cytidine
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
A white crystalline nucleoside composed of one molecule each of cytosine and ribose.cytosine ribonucleoside
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.