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[thahy-mi-deen] /ˈθaɪ mɪˌdin/
noun, Biochemistry.
a nucleoside, C 10 H 14 N 2 O 5 , containing thymine and deoxyribose, that is a constituent of DNA.
Origin of thymidine
blend of thymine and -ide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for thymidine


the crystalline nucleoside of thymine, found in DNA. Formula: C10H14N2O5
Word Origin
C20: from thym(ine) + -ide + -ine²
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
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thymidine in Medicine

thymidine thy·mi·dine (thī'mĭ-dēn')
A nucleoside composed of thymine and deoxyribose.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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thymidine in Science
A nucleoside composed of thymine and deoxyribose that (with the addition of phosphate to form the nucleotide thymine) occurs in DNA. Radioactively tagged thymidine has been used in genetics research to study DNA synthesis in the nuclei of cells undergoing cell division. Chemical formula: C10H14N2O5.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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