conjoined twins in which there is a single head and upper body and duplicated buttocks and lower limbs. See: conjoined twins. See also: dipygus. Synonym(s): anadidymus, ileadelphus, iliadelphus
anadidymus
(an″ă-did′ĭ-mŭs) [ ana- + didymos] A developmental abnormality in which the upper parts of the bodies of twins are fused, but the buttocks and legs are free.