prothrombin
/proʊˈθrɑmbɪn/
noun
- A protein in blood plasma that is converted into thrombin during blood clotting, helping to stop bleeding.
- Without enough prothrombin, even a small cut can cause excessive bleeding.
- The doctor explained that prothrombin is essential for forming blood clots.
- A blood test can measure the level of prothrombin to check for clotting disorders.