Copernicus

UK: /kəˈpɜːnɪkəs/ US: (kō pûr′ni kəs, kə-)

WordReference Random House Unabridged Dictionary of American English © 2025

Co•per•ni•cus  (kō pûr′ni kəs, kə-), n. 

Nic•o•la•us  (nik′ə lā′əs), (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.)
1. Astronomy 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).

Collins Concise English Dictionary © HarperCollins Publishers::

Copernicus / kəˈpɜːnɪkəs/ noun

1. Nicolaus ( ˌnɪkəˈleɪəs ). Polish name Mikołaj Kopernik. 1473–1543, Polish astronomer, whose theory of the solar system (the Copernican system) was published in 1543

Coˈpernican adjective

Copernicus / kəˈpɜːnɪkəs/ noun

1. a conspicuous crater on the moon, over 4000 metres deep and 90 kilometres in diameter, from which a system of rays emanates