1) Mythological people 
Antichthones, in geography, are those peoples who inhabit the antipodes, regions on opposite sides of the Earth. The word is compounded of the Greek ὰντὶ and χθών. Classical and Medieval Europe considered the Earth to be divided by the equator into two hemispheres, the northern and southern; those who inhabited one of these hemispheres w...
• (pl. ) of Antichthon
antichthones 1. Hypothetical earths which are opposite to ours, or that are on the opposite side of the sun. 2. Referring to inhabitants of opposite hemispheres.