Terata

anadidyma, an order of double tositic monsters in which there is an upward cleav;e of the cerebro-spinal axes. Fusion has occurred the cephalic extremity, with divergence of the udal, and, as the result, a double monster is proced, single above and double below. T. anakadidyma, an order of double autositic monsters in hich there is both upward and downward cleavage the cerebro-spinal axes. The two primitive traces proach at points in their continuity only, while the o extremities diverge. As a result, a double being formed, double above and below, with union beeen. T. katadidyma, an order of double autoc monsters in which there is a cleft of the cerebroal axes from above downward; that is, the primie traces have fused at their caudal extremity, and verge in varying degrees as they ascend. The result is a double being, separated above and joined below. Teratogeny (ter-at-of '-en-e). The formation or bringing forth of monstrosities.