/ (ˌɛksəʊˈnjuːklɪˌeɪz) /
an enzyme that is capable of detaching the terminal nucleotide from a nucleic acid chainCompare endonuclease
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Medicine definitions for exonuclease
[ ĕk′sō-nōō′klē-ās′, -āz′ ]
Any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.