"situated on the opposite side of the globe," 1640s; see antipodes + -al (1). Also antipodean, attested from 1630s as a noun; 1650s as an adjective.
antipodal regions of the earth
antipodal points on a sphere
anti-perspirant
antiphon
antiphonal
antiphony
antiphrasis
antipodal
antipodes
antipope
antipyretic
antiquarian
antiquary