ˈpälē(ˌ)thēˌizəm, -lə̇(- noun
Etymology: French polythéisme, from Late Greek polytheos believing in many gods (from Greek, of many gods, from poly- + theos god) + French -isme -ism — more at the-
: the belief in or worship of a plurality of gods
ancient polytheisms of Babylon and Egypt — British Book News