coelophysis Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. one of the oldest known dinosaurs; late Triassic; cannibalistic Example Sentence Coelophysis was a smaller meat eating dinosaur. Synonyms dinosaur; cannibalistic dinosaur; dinosaur from the late Triassic Antonyms worm Hear It! Say It! Write It! coelophysis Switch to cursive Start Share with your friends: