bicephalus

dicephalus

 [di-sef´ah-lus] a malformed fetus with two heads; called also bicephalus and derodidymus.

di·ceph·a·lus

(dī-sef'ă-lŭs), Symmetric conjoined twins with two separate heads. See: conjoined twins. Synonym(s): bicephalus, diplocephalus [G. di-, two, + kephalē, head]

dicephalus

An infant with two heads.