Relating to the world or visible nature; in astron., rising or setting with the sun.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective) (adj.) (adjective)
Pertaining to the world or the universe.
- The Clarendon dictionary. By William Hand Browne, Samuel Stehman Haldeman. Published 1894. (adjective) (adj.) (adjective)
Relating to or holding of the order of the universe, or the world as a part of it; co- extensive with a period in the history of the world; rising or setting with the sun; pertaining to cosmism.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (adjective) (adj.) (adjective)
Pertaining to the universe and the laws which govvern it; orderly, as opposed to chaotic; in astronomy, rising or setting with the sun, as a star.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (adjective) (adj.) (adjective)

Usage examples:

Now that we have entered the cosmic era, we look back at him with understanding.
- O. Henry Memorial Award Prize Stories of 1921 by Various
It is not necessary to regard the cosmic process as evil.
- Thomas Henry Huxley; A Sketch Of His Life And Work by P. Chalmers Mitchell
Morality is by inference raised to the status of a cosmic law, because evil deeds will infallibly bring evil consequences to the doer in this life or in another.
- Hinduism and Buddhism, Vol I. (of 3) An Historical Sketch by Charles Eliot