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constrictor

[kuh n-strik-ter] /kənˈstrɪk tər/
noun
1.
a snake that kills its prey by coiling tightly around it, causing suffocation.
2.
Anatomy. a muscle that constricts a hollow part of the body, as the pharynx.
3.
a person or thing that constricts.
Origin
1700-1710
1700-10; < Neo-Latin; see constrict, -tor
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for constrictor's

constrictor

/kənˈstrɪktə/
noun
1.
any of various nonvenomous snakes, such as the pythons, boas, and anaconda, that coil around and squeeze their prey to kill it
2.
any muscle that constricts or narrows a canal or passage; sphincter
3.
a person or thing that constricts
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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constrictor's in Medicine

constrictor con·stric·tor (kən-strĭk'tər)
n.
One that constricts, especially a muscle that contracts or compresses a part or organ of the body.

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