- opodidymus
- Conjoined twins with a single body having two heads fused at the back with partially separated facial regions. See conjoined twins, under twin. [G. ops, eye, face, + didymos, twin]
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opo·did·y·mus (o″po-didґĭ-məs) [Gr. ōps face + -didymus] a fetus with two fused heads and with the sense organs partially fused.
Medical dictionary. 2011.