Main Entry: au·to·he·mo·ly·sis Variant: or chiefly Britishau·to·hae·mo·ly·sis/-hi-'mäl-&-s&s, -"hE-m&-'lI-s&s/ Function: noun Inflected Form: pluralau·to·he·mo·ly·ses/-"sEz/ : hemolysis of red blood cells by factors in the serum of the person from whom the blood is taken