factor X

noun

: a clotting factor that is produced primarily in the liver under the influence of vitamin K and in its activated form is a proteolytic enzyme that converts prothrombin to thrombin in a reaction dependent on calcium ions and phospholipids and accelerated by factor V

Examples of factor X in a Sentence

Recent Examples on the Web In Strategy 1, the revealing factor X is 3160/1600 = 1:98. Nicholas Diaco, Scientific American, 20 Mar. 2018

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'factor X.' 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

1954, in the meaning defined above

Time Traveler
The first known use of factor X was in 1954

Dictionary Entries Near factor X

Cite this Entry

“Factor X.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/factor%20X. Accessed 5 Nov. 2024.

Medical Definition

factor X

noun
: a clotting factor that is produced primarily in the liver under the influence of vitamin K and in its activated form is a proteolytic enzyme that converts prothrombin to thrombin in a reaction dependent on calcium ions and phospholipids and accelerated by factor V

called also Stuart-Prower factor

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