antiearth

== English == === Etymology === From anti- +‎ earth. === Noun === antiearth A hypothetical analog to earth composed entirely of antimatter. (historical) A hypothetical twin planet to earth, proposed by the Pythagoreans, which cannot be seen from earth. === Adjective === antiearth (not comparable) Facing or moving away from earth. Opposed to or destructive of the earth and things native to the earth. === Anagrams === antiheart