an·tip·o·des 
(ăn-tĭpə-dēz′)
(ăn-tĭpə-dēz′)pl.n.
1. Any two places or regions that are on diametrically opposite sides of the earth.
2. (used with a sing. or pl. verb) Something that is the exact opposite or contrary of another; an antipode.
[Middle English, people with feet opposite ours, from Latin, from Greek, from pl. of antipous, with the feet opposite : anti-, anti- + pous, pod-, foot; see ped- in the Appendix of Indo-European roots.]
an·tip′o·dean adj.