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Definition of Copernican system noun from the Oxford Advanced Learner's Dictionary

Copernican system

noun
 
/kəˈpɜːnɪkən sɪstəm/
 
/kəˈpɜːrnɪkən sɪstəm/
[singular]
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  1. the theory that the sun is the centre of the solar system, with the earth and other planets moving around it compare Ptolemaic system
    Word Originmid 17th cent.: named after Copernicus (1473-1543), the Polish astronomer.
See Copernican system in the Oxford Advanced American Dictionary
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