Definition of Great Schism in English:

Great Schism

proper noun

  • 1The breach between the Eastern and the Western Churches, traditionally dated to 1054 and becoming final in 1472.

  • 2The period 1378–1417, when the Western Church was divided by the creation of antipopes.

Pronunciation:

Great Schism

/ˌɡrāt ˈs(k)izəm/