1. an extinct reptile that lived millions of years ago, often of enormous size
2. a person or thing that is outdated or resistant to change
Usage: informal

Examples

• The museum has a complete skeleton of a Tyrannosaurus rex dinosaur.
• Scientists study dinosaur fossils to learn about prehistoric life.
• Some dinosaurs were herbivores while others were carnivores.
• The massive dinosaur roamed the earth 65 million years ago.
• My grandfather refuses to use computers – he’s such a dinosaur.
• That old factory is a dinosaur from the industrial age.
• The company’s dinosaur management style drove away young employees.