Manichaeism \Man"i*chae*ism\, Manicheism \Man"i*che*ism\, n. [Cf. F. manich['e]isme.] The doctrines taught, or system of principles maintained, by the Manichaeans. [1913 Webster]
MANICHEISM, n. The ancient Persian doctrine of an incessant warfare between Good and Evil. When Good gave up the fight the Persians joined the victorious Opposition.