a kinin, CHNO, released from blood plasma by some snake venoms and certain other enzymes, which slows intestinal contractions, lowers blood pressure, etc.
Origin of bradykininfrom brady- + Classical Greek kinein, to move: see kinetic
A biologically active polypeptide, consisting of nine amino acids, that forms from a blood plasma globulin and mediates the inflammatory response, increases vasodilation, and causes contraction of smooth muscle.
Origin of bradykininbrady- Greek kīnein to move ; see keiə- in Indo-European roots. -in