archosaur Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a type of reptile that lived millions of years ago and includes dinosaurs, crocodiles, and birds. Example Sentence The archosaur was a large and powerful creature. Synonyms dinosaur; crocodile; bird Antonyms mammal; amphibian Hear It! Say It! Write It! archosaur Switch to cursive Start Share with your friends:
