Doubling of a part.
[L. a doubling, fr. duplex (duplic-), two-fold]
duplicitas(1) The doubling of a body part.
(2) An obsolete term for conjoined twins, see there (popularly known as Siamese twins).
The obsolete term duplicitas is defined as the apparent doubling of body segments; the root -pagus is preferred, which carries a prefix according to attached region—as in craniopagus, thoracopagus and pygopagus (for conjoined twins who are joined at the head, chest and hips, respectively).
A fetal abnormality in which an organ or a part is doubled or apparently doubled.