An autoantibody that in the presence of complement causes lysis of erythrocytes in the same individual in whose body the lysin is formed. ... (05 Mar 2000) ... 
(aw″to-he-mol´ĭ-sin) a hemolysin that causes complement-dependent hemolysis of the patient's own erythrocytes.
Type: Term Pronunciation: aw′tō-hē-mol′i-sin Definitions: 1. An autoantibody that causes lysis of erythrocytes in the presence of complement.