from the GNU version of the Collaborative International Dictionary of English
- n. A hypothetical earth counter to ours, or on the opposite side of the sun.
- n. Inhabitants of opposite hemispheres.
from The Century Dictionary and Cyclopedia
- n. In Pythagorean astronomy, an imaginary invisible planet continually opposing the earth and eclipsing the central fire, round which it was supposed to revolve, in common with the earth, moon, sun, certain planets, and the fixed stars.
- n. plural The inhabitants of an opposite hemisphere.
Sorry, no etymologies found.