from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Causing or promoting blood clotting.
- adjective Of or relating to thromboplastin.
Sorry, no etymologies found.
When someone wants to get Heparin, an anticoagulant, out of the dispenser, it asks if he knows the patient's partial thromboplastic time that determines how long it takes for the person's blood to clot.