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restriction enzyme

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noun Biochemistry.
  1. any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.

Origin of restriction enzyme

First recorded in 1960–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for restriction enzyme

restriction enzyme

noun
  1. any of several enzymes produced by bacteria as a defence against viral infection and commonly used to cut DNA for genetic manipulation or diagnosis
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

restriction enzyme in Medicine

restriction enzyme

(rĭ-strĭkshən)
n.
  1. Any of a group of enzymes that cleave DNA at specific sites to produce discrete fragments, used especially in gene-splicing.restriction endonuclease
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.