[hee-muh-stat, hem-uh-]
an instrument or agent used to compress or treat bleeding vessels in order to arrest hemorrhage.

1895–1900; shortened form of hemostatic

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World English Dictionary
haemostat or (US) hemostat (ˈhiːməʊˌstæt, ˈhɛm-, ˈhiːməʊˌstæt, ˈhɛm-)
1.  a surgical instrument that stops bleeding by compression of a blood vessel
2.  a chemical agent that retards or stops bleeding
hemostat or (US) hemostat

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

hemostat he·mo·stat (hē'mə-stāt')

  1. An agent, such as a chemical, that stops bleeding.

  2. An instrument for arresting hemorrhage by compression of the bleeding vessel.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The pouch, called a swelling hemostat, resembles a beanbag and is made of a polymer-fiber mesh encased in spandex fabric.
Hemostat tips can be ground or filed to a thin, flat tip to better grip straws in holes.
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