plasmin

n. type of enzyme that catalyzes the breakdown of fibrin, fibrinolysin

Plasmin is an important enzyme  present in blood that degrades many blood plasma proteins, most notably fibrin clots. The degradation of fibrin is termed fibrinolysis.
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Plasmin /plas·min/ an endopeptidase occurring in plasma as plasminogen, which is activated via cleavage by plasminogen activators; it solubilizes [more]Plasmin - Community and Resources

Noun
1. an enzyme that dissolves the fibrin of blood clots
(synonym) fibrinolysin
(hypernym) enzyme
(hyponym) plasminogen

n. plasmin, type of enzyme that catalyzes the breakdown of fibrin, fibrinolysin