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Feb 15, 2012
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Co•per•ni•cus



Pronunciation: (kō-pûr'ni-kus, ku-), [key]
—n.
1. Nic•o•la•us Pronunciation: (nik"u-lā'us), [key] (Mikolaj Kopernik), 1473–1543, Polish astronomer who promulgated the now accepted theory that the earth and the other planets move around the sun ( the Coper'nican Sys"tem).
2. a crater in the second quadrant of the face of the moon, having an extensive ray system: about 56 mi. (90 km) in diameter from crest to crest with walls rising about 12,000 ft. (3650 m) from its floor; having several central mountains the highest being about 2400 ft. (730 m).

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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