| plasma thromboplastin antecedent | (n) coagulation factor whose deficiency results in a hemorrhagic tendency, Syn. factor XI |
| plastinate | (v) preserve (tissue) with plastics, as for teaching and research purposes, Example: The doctor plastinates bodies to teach anatomy to his students |
| plastination | (n) a process involving fixation and dehydration and forced impregnation and hardening of biological tissues; water and lipids are replaced by curable polymers (silicone or epoxy or polyester) that are subsequently hardened, Example: the plastination of specimens is valuable for research and teaching |
| thromboplastin | (n) an enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot, Syn. factor III, thrombokinase |
| proconvertin | (n) a coagulation factor formed in the kidney under the influence of vitamin K, Syn. factor VII, stable factor, cothromboplastin |