bicephalus

dicephalus

 [di-sef´ah-lus]
a malformed fetus with two heads; called also bicephalus and derodidymus.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

di·ceph·a·lus

(dī-sef'ă-lŭs),
Symmetric conjoined twins with two separate heads. See: conjoined twins.
[G. di-, two, + kephalē, head]
Farlex Partner Medical Dictionary © Farlex 2012

dicephalus

An infant with two heads.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.