Ditheism the worship of two gods.
(1.) This term was sometimes applied by the orthodox to the Arians, on the ground that they believed in one God, the Father, who is eternal, and one God, the Son, not eternal.
(2.) The term is also applied to the doctrine of two first principles, or gods, one good, the other evil. "The chiefest and most eminent asserters of this ditheistic doctrine of two self-existent principles in the universe were the Marcionites and the Manichaeans, both of which sects, though they made some slight pretense to Christianity, yet were not by Christians owned for such. Some of the pagans also entertained the same opinion." — Cudworth, True Intellectual System (Andover, 1837), 1:290., SEE DUALISM.