prothrombin

noun
pro·​throm·​bin | \ (ˌ)prō-ˈthräm-bən How to pronounce prothrombin (audio) \

Definition of prothrombin

: a plasma protein produced in the liver in the presence of vitamin K and converted into thrombin in the clotting of blood

Examples of prothrombin in a Sentence

Recent Examples on the Web Among the 20 or so known genetic risk factors, the most common include the factor V Leiden mutation, prothrombin gene mutations and deficiencies in protein C, protein S and antithrombin. Dr. Keith Roach, oregonlive, 1 Nov. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prothrombin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of prothrombin

1898, in the meaning defined above

History and Etymology for prothrombin

International Scientific Vocabulary

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Time Traveler for prothrombin

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The first known use of prothrombin was in 1898

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Dictionary Entries Near prothrombin

prothorax

prothrombin

protist

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Cite this Entry

“Prothrombin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/prothrombin. Accessed 8 Aug. 2022.

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More Definitions for prothrombin

prothrombin

noun
pro·​throm·​bin | \ (ˈ)prō-ˈthräm-bən How to pronounce prothrombin (audio) \

Medical Definition of prothrombin

: a plasma protein produced in the liver in the presence of vitamin K and converted into thrombin by the action of various activators (as thromboplastin) in the clotting of blood

Other Words from prothrombin

prothrombic \ -​bik How to pronounce prothrombin (audio) \ adjective

More from Merriam-Webster on prothrombin

Britannica.com: Encyclopedia article about prothrombin

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