Definition of Copernican
1
: of or relating to Copernicus or the belief that the earth rotates daily on its axis and the planets revolve in orbits around the sun
2
: of radical or major importance or degree
effected a Copernican revolution in philosophy — The Times Literary Supplement (London)
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Merriam-Webster unabridged
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Time Traveler for Copernican
The first known use of Copernican was in 1667
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