hirudin

[hir-yuh-din, hir-uh-, hi-rood-n]
noun
a gray or white, water-soluble acidic polypeptide obtained from the buccal gland of leeches, used in medicine chiefly as an anticoagulant.

Origin:
1900–05; formerly trademark

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Collins
World English Dictionary
hirudin (hɪˈruːdɪn)
 
n
med an anticoagulant extracted from the mouth glands of leeches
 
[C20: from Latin hirudin-, hirudo leech + -in]

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

hirudin hir·u·din (hĭ-rōōd'n, hēr'ə-dən, -yə-)
n.
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.
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Example sentences
And hirudin, the anticoagulant, may be used in the treatment of inflammation of the middle ear.
If the leech is allowed to complete its meal, much of the hirudin is withdrawn before dropping off.
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