(n.) The doctrine of, or belief in, a plurality of gods.
Example Sentences:
(1) He rejected what he saw as pagan accretions introduced by bid’a (innovation) and shirk (idolatry or polytheism), which detracts from the absolute transcendence of God.
Tritheism
Definition:
(n.) The opinion or doctrine that the Father, Son, and Holy Spirit are three distinct Gods.