[ hir-yuh-din, hir-uh-, hi-rood-n ]
/ ˈhɪr yə dɪn, ˈhɪr ə-, hɪˈrud n /


a gray or white, water-soluble acidic polypeptide obtained from the buccal gland of leeches, used in medicine chiefly as an anticoagulant.

Origin of hirudin

First recorded in 1900–05; formerly trademark
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hirudin


/ (hɪˈruːdɪn) /


med an anticoagulant extracted from the mouth glands of leeches

Word Origin for hirudin

C20: from Latin hirudin-, hirudo leech + -in
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

Medicine definitions for hirudin


[ hĭ-rōōdn, hîrə-dən, -yə- ]


A substance extracted from the salivary glands of leeches and used as an anticoagulant.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.