the form of the belief in one God as the transcendent creator and ruler of the universe that does not necessarily entail further belief in divine revelation
Compare deism
2.
the belief in the existence of a God or gods
Compare atheism
Word origin
C17: from Greek theos god + -ism
theism in American English
(ˈθiˌɪzəm)
noun
1.
belief in a god or gods
2.
belief in one God; monotheism
see also pantheism, polytheism
3.
belief in one God viewed as creator and ruler of the universe and known by revelation