: 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
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Next, formulate a question or a hypothesis to see if there’s a relationship between factor X and outcome Y.
—
Claus Jepsen, Forbes.com, 16 May 2025
In Strategy 1, the revealing factor X is 3160/1600 = 1:98.
—Nicholas Diaco, Scientific American, 20 Mar. 2018
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Claus Jepsen, Forbes.com, 16 May 2025
In Strategy 1, the revealing factor X is 3160/1600 = 1:98.
—Nicholas Diaco, Scientific American, 20 Mar. 2018
Cite this Entry
“Factor X.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/factor%20X. Accessed 31 Oct. 2025.
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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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