noun
: the time required for a particular specimen of prothrombin to induce blood-plasma clotting under standardized conditions in comparison with a time of between 11.5 and 12 seconds for normal human blood
noun
: the time required for a particular specimen of prothrombin to induce blood-plasma clotting under standardized conditions in comparison with a time of between 11.5 and 12 seconds for normal human blood
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012