Source : Webster's Revised Unabridged Dictionary (1913)

Antipodean \An`ti*po"de*an\, a.
   Pertaining to the antipodes, or the opposite side of the
   world; antipodal.

Source : WordNet®

antipodean
     adj : relating to the antipodes or situated at opposite sides of
           the earth; "antodpodean latitudes"; "antipodal regions
           of the earth"; "antipodal points on a sphere" [syn: {antipodal}]