noun🔗ShareIn scientific usage, any of the animals belonging to the clade Dinosauria, especially those that existed during the Triassic, Jurassic and Cretaceous periods and are now extinct."The museum has a large dinosaur skeleton on display. "animalhistorygeologybiologyscienceorganismnaturepastperiodChat with AIVocabulary GamePractice Reading
noun🔗ShareIn non-scientific usage, any non-avian dinosaur."My little brother loves toy dinosaurs, especially the big T-Rex. "animalhistorysciencebiologyorganismnaturegeologypastChat with AIVocabulary GamePractice Reading
noun🔗ShareAny extinct reptile, not necessarily belonging to Dinosauria, that existed between about 230 million and 65 million years ago."My little brother loves to play with toy dinosaurs, roaring and stomping them around the house. "animalhistorybiologynaturegeologypastChat with AIVocabulary GamePractice Reading
noun🔗ShareA person or organisation that is very old, has very old-fashioned views, or is not willing to change and adapt."My grandfather is a dinosaur when it comes to technology; he still uses a rotary phone. "agecharacterpersonattitudeorganizationhistoryChat with AIVocabulary GamePractice Reading
noun🔗ShareAnything no longer in common use or practice."Using floppy disks for computer work is now a dinosaur. "historypastChat with AIVocabulary GamePractice Reading
