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[pol-ee-noo-klee-uh-tahyd, -nyoo-] /ˌpɒl iˈnu kli əˌtaɪd, -ˈnyu-/
noun, Biochemistry.
a sequence of nucleotides, as in DNA or RNA, bound into a chain.
Origin of polynucleotide
First recorded in 1910-15; poly- + nucleotide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for polynucleotide


(biochem) a molecular chain of nucleotides chemically bonded by a series of ester linkages between the phosphoryl group of one nucleotide and the hydroxyl group of the sugar in the adjacent nucleotide. Nucleic acids consist of long chains of polynucleotides
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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polynucleotide in Medicine

polynucleotide pol·y·nu·cle·o·tide (pŏl'ē-nōō'klē-ə-tīd', -nyōō'-)
A linear polymer containing an indefinite, usually large, number of nucleotides linked from one ribose or deoxyribose to another by phosphoric residues.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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