Conjoined twins fused except in the cephalic region; a variety of duplicitas posterior. ... See: conjoined twins. ... Origin: cephalo-+ G. Didymos, twin ... (05 Mar 2000) ... 
Type: Term Pronunciation: sef′ă-lō-did′i-mŭs Definitions: 1. Conjoined twins fused except in the cephalic region; a variety of duplicitas posterior. See: conjoined twins, under twin