(trī-in'ē-od'i-mŭs), A grossly malformed fetus with three heads, joined at the occiput, and a single body. [tri- + G. inion, nape of the neck, + didymos, twin]
triiniodymus
(trī″ĭn-ē-ŏd′ĭ-mŭs) [″ + inion, nape of the neck, + didymos, twin] A deformed fetus with a single body and three heads joined at the occiput.