Noun: dinosaur 'dI-nu,sor
- Any of numerous extinct terrestrial reptiles of the Mesozoic era
"Kids are often fascinated by dinosaurs like T. rex and Triceratops";
- dino [informal]
- An old-fashioned person, organization or thing, not willing or able to change and adapt
"The company was seen as a dinosaur in the rapidly evolving tech industry"
Derived forms: dinosaurs
Type of: archosaur, archosaurian, archosaurian reptile
Encyclopedia: Dinosaur, Colorado