1.  The one Supreme Being, the creator and ruler of the universe.
2.  The Supreme Being considered with reference to a particular attribute: the God of Islam.
3.  One of several deities, especially a male deity, presiding over some portion of worldly affairs.
4.  A supreme being according to some particular conception: the god of mercy.
5.  Christian Science. the Supreme Being, understood as Life, Truth, love, Mind, Soul, Spirit, Principle.