1. extinct reptiles that lived millions of years ago, ranging from very small to enormous in size
2. people or things that are outdated or unable to adapt to change
Usage: informal

Examples

• The museum has an impressive collection of dinosaur fossils.
• Tyrannosaurus rex was one of the largest dinosaurs.
• Scientists believe dinosaurs became extinct 65 million years ago.
• Many dinosaurs were herbivores that ate plants.
• Some dinosaurs had feathers and could fly.
• The old executives were dinosaurs who refused to use computers.
• That company is full of dinosaurs who can’t adapt to modern technology.