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- n. A heliocentric model of the solar system, proposed in the 16th Century by the eponymous astronomer.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (astronomy) Copernicus' astronomical model in which the Earth rotates around the sun
From Copernicus ("a surname") + -an + system. After Polish astronomer Nicolaus Copernicus, who formulated and proposed the theory. (Wiktionary)
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