- the branch of philosophy dealing with the origin and general structure of the universe, with its parts, elements, and laws, and especially with such of its characteristics as space, time, causality, and freedom.
- the branch of astronomy that deals with the general structure and evolution of the universe.
- the philosophical study of the origin and nature of the universe
- the branch of astronomy concerned with the evolution and structure of the universe
- a particular account of the origin or structure of the universe
