an·​ti·​throm·​bin ˌan-tē-ˈthräm-bən How to pronounce antithrombin (audio)
: any of a group of substances that inhibit blood clotting by inactivating thrombin

Example Sentences

Recent Examples on the Web Doctors use a protein called antithrombin to treat a rare genetic disorder that causes dangerous blood clotting, but that molecule is in very short supply. Aaron Rowe, WIRED, 8 Jan. 2009

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'antithrombin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1901, in the meaning defined above

Time Traveler
The first known use of antithrombin was in 1901

Dictionary Entries Near antithrombin

Cite this Entry

“Antithrombin.” Dictionary, Merriam-Webster, Accessed 3 Jun. 2023.

Medical Definition


an·​ti·​throm·​bin -ˈthräm-bən How to pronounce antithrombin (audio)
: any of a group of substances in blood that inhibit blood clotting by inactivating thrombin compare antiprothrombin, heparin
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