Definition of: deism

(dēīz·əm) noun
1. The belief in the existence of a personal God, based solely on the testimony of reason and rejecting any supernatural revelation; natural religion.
2. The belief that God created the world and set it in motion, subject to natural laws, but take no interest in it.
3. The belief in a first cause which is not intrinsically perfect or complete, and therefore not a proper object for worship. [<L deus a god + -ISM]
—de·is′tic or ·ti·cal adjective
—de·is′ti·cal·ly adverb