That member of abnormal, unequal conjoined twins that is able to live independently and nourish the other member (parasite) of the pair. ... Origin: auto-+ G. Sitos, food ... (05 Mar 2000) ... 
(aw´to-sīt) in unequal twins, the larger, more normal twin, to which the other (the parasitic fetus) is attached.
Type: Term Pronunciation: aw′tō-sīt Definitions: 1. That member of abnormal, unequally conjoined twins able to live independently and nourish the other member (parasite) of the pair.
autosite The usually larger component of abnormal, unequally conjoined twins that is able to live independently and nourish the other parasitic component.