Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a dicephalus with separate necks.
Farlex Partner Medical Dictionary © Farlex 2012
derodidymus(der?o-did'i-mus) [Gr. dere, neck, + didymos, double]
A malformed fetus with two necks and heads but a single body and normal limbs. Synonym: dicephalus
Medical Dictionary, © 2009 Farlex and Partners