Definition of Copernican system in English:

Copernican system

Line breaks: Co¦per|ni¦can sys¦tem
Pronunciation: /kəˈpəːnɪk(ə)n
(also Copernican theory)


  • The theory that the sun is the centre of the solar system, with the planets (including the earth) orbiting round it. Compare with Ptolemaic system.
    More example sentences
    • We are in the position of medieval astronomers who fear that if the Copernican theory of the solar system is true, ‘the earth’ as we have conceived it does not exist.
    • He also became an advocate of the controversial Copernican theory of the solar system, which he often defended in public debates.
    • Making the orbits elliptical made the Copernican system more accurate.


mid 17th century: named after Copernicus (see Copernicus, Nicolaus).

More definitions of Copernican system

Definition of Copernican system in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day astrogation
Pronunciation: ˌastrəˈgāSHən
(in science fiction) navigation in outer space