craniodidymus

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.

cra·ni·o·did·y·mus

(krā'nē-ō-did'i-mŭs),
Conjoined twins with fused bodies but with two heads. See: conjoined twins.
[cranio- + G. didymos, twin]
Farlex Partner Medical Dictionary © Farlex 2012