autocosm Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a self-contained world or universe Example Sentence The autocosm of a video game allows players to explore a virtual world. Synonyms microcosm; bubble; realm Antonyms macrocosm; reality Hear It! Say It! Write It! autocosm Switch to cursive Start Share with your friends: