COSMOLOGY Scrabble 17 Words With Friends 20 Definition noun the metaphysical study of the origin and nature of the universe. noun the branch of astrophysics that studies the origin and evolution and structure of the universe. — synonyms: cosmogony, cosmogeny See all 78 words you can make from COSMOLOGY → 9-letter words Words starting with C Words ending with Y ← Unscramble different letters