You know what it looks like… but what is it called?
TAKE THE QUIZ“plasma thromboplastin”
The following 2 entries include the term plasma thromboplastin.
plasma thromboplastin antecedent
noun: a clotting factor whose absence is associated with a form of hemophilia —abbreviation PTA
plasma thromboplastin component
noun: factor ix —abbreviation PTC
Love words? Need even more definitions?
Merriam-Webster unabridged