factor V

noun
\ -ˈfīv How to pronounce factor V (audio) \

Definition of factor V

: a clotting factor produced primarily in the liver that circulates in an inactive form in blood plasma and in its activated form combines with factor X on the surface of platelets to accelerate the conversion of prothrombin to thrombin

Examples of factor V in a Sentence

Recent Examples on the Web In this case, the hematologist will usually look for underlying causes, such as protein C or S deficiency or the factor V Leiden mutation. Dr. Keith Roach, oregonlive, 10 Nov. 2021 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 'factor V.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of factor V

1947, in the meaning defined above

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Time Traveler for factor V

Time Traveler

The first known use of factor V was in 1947

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Dictionary Entries Near factor V

factor of safety

factor V

factor VIII

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Cite this Entry

“Factor V.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/factor%20V. Accessed 22 Jan. 2022.

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More Definitions for factor V

factor V

noun
\ -ˈfīv How to pronounce factor V (audio) \

Medical Definition of factor V

: a globulin clotting factor produced primarily in the liver that circulates in an inactive form in blood plasma and in its activated form combines with factor X on the surface of platelets to accelerate the conversion of prothrombin to thrombin

called also accelerator globulin, labile factor, proaccelerin

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