counterearth

coun·ter·earth

[koun-ter-urth]
noun
(in Pythagorean astronomy) a planet, out of sight from our part of the earth, whose shadow upon the sun and moon, cast by a central fire that is also out of sight, causes the eclipses.
Also called antichthon.


Origin:
1855–60; counter- + earth, as translation of Greek antíchthōn

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Counterearth is always a great word to know.
So is lollapalooza. Does it mean:
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
a gadget; dingus; thingumbob.
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