COSMOLOGY

noun (plural -gies) Etymology: New Latin cosmologia, from Greek kosmos + New Latin -logia -logy Date: circa 1656 1. a branch of metaphysics that deals with the nature of the universe, a theory or doctrine describing the natural order of the universe, a branch of astronomy that deals with the origin, structure, and space-time relationships of the universe, cosmological adjective cosmologically adverb cosmologist noun