-
- To save this word, you'll need to log in.
restriction enzyme
noun
: any of various enzymes that cleave DNA into fragments at specific sites in the interior of the molecule
called also restriction endonuclease
Examples of restriction enzyme in a Sentence
Recent Examples on the Web
Some microbes defend themselves from invasion by using molecules known as restriction enzymes.
—Quanta Magazine, 6 Feb. 2015
In the 1970s, molecular biologists figured out how to use restriction enzymes to cut DNA, giving birth to the modern biotechnology industry.
—Quanta Magazine, 6 Feb. 2015
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Word History
First Known Use
1965, in the meaning defined above
Time Traveler
The first known use of restriction enzyme was
in 1965
Dictionary Entries Near restriction enzyme
Cite this Entry
“Restriction enzyme.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/restriction%20enzyme. Accessed 25 Dec. 2024.
Medical Definition
restriction enzyme
noun
: any of various enzymes that cleave DNA into fragments at specific sites in the interior of the molecule and are often used as tools in molecular analysis
More from Merriam-Webster on restriction enzyme
Britannica.com: Encyclopedia article about restriction enzyme
Love words? Need even more definitions?
Merriam-Webster unabridged
Share