Pronunciation: (koz-mol'u-jē), [key]
1. the branch of philosophy dealing with the origin and general structure of the universe, with its parts, elements, and laws, and esp. with such of its characteristics as space, time, causality, and freedom.
2. the branch of astronomy that deals with the general structure and evolution of the universe.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.