dioramas Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a scene represented by threedimensional objects placed in front of a painted background as in a natural history museum Example Sentence The children went to see the dioramas that were on display at the museum. Synonyms scene; horizon; bird's-eye view Antonyms audio Hear It! Say It! Write It! dioramas Switch to cursive Start Share with your friends: