deformed conjoined twins with two fused heads, one face being rudimentary.
Unequal conjoined twins with heads united in such a manner that one face is rudimentary. See: conjoined twins.
[mio- + ōps, eye]
miopus(mī′ō-pŭs) [″ + ops, face]
Conjoined twins with one having a rudimentary face.