archosaur Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. a group of reptiles that includes dinosaurs and birds. Example Sentence The archosaur was a large and powerful creature. More Example Sentences Some birds are classified as archosaurs too. Synonyms reptile; dinosaur; bird Antonyms mammal; amphibian Hear It! Say It! Write It! archosaur Switch to cursive Start Share with your friends:
