cosmogenesis Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. the origin or creation of the universe. Example Sentence The Big Bang Theory is one theory of cosmogenesis. More Example Sentences Cosmogenesis is a topic of great interest. Synonyms creation; origin; birth Antonyms end of the universe Hear It! Say It! Write It! cosmogenesis Switch to cursive Start Share with your friends: