Py·thag·o·re·an·ism /-ˈriəˌnɪzəm/
Pyth·a·go·re·an·ism n. The doctrines of Pythagoras or the Pythagoreans. As a philosophic school Pythagoreanism became extinct in Greece about the middle of the 4th century [B. C.]. --Encyc. Brit. ◄ ►