Noun: thromboplastin ,thróm-bu'plas-tin
- An enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot
"Thromboplastin plays a crucial role in the blood clotting cascade";
- thrombokinase, factor III
Derived forms: thromboplastins
Type of: clotting factor, coagulation factor
Encyclopedia: Thromboplastin