- 1A fossil reptile of the Mesozoic era, often reaching an enormous size.More example sentences
- These great birds were the last successors of the mighty theropod dinosaurs of the Mesozoic.
- We are so used to the enormous size of dinosaurs that we almost forget to think about how they grew to be so large.
- They do still have two skeletons of Tarbosaurus, a theropod dinosaur related to Tyrannosaurus rex.
The dinosaurs are placed, according to their hip structure, in two distantly related orders (see ornithischian and saurischian). Some of them may have been warm-blooded, and their closest living relatives are the birds. Dinosaurs were all extinct by the end of the Cretaceous period (65 million years ago), possibly as a result of a catastrophic asteroid impact in the Gulf of Mexico
- 2A person or thing that is outdated or has become obsolete because of failure to adapt to changing circumstances.More example sentences
- I still get invites but I feel like a dinosaur and a bit of a has-been now.
- He is like a Tyrannosaurus Rex, leading a herd of corporate dinosaurs over the cliff and bellowing as he goes.
- She said: "I suppose at 30 I'm considered a bit of a dinosaur in the industry."
- More example sentences
- Thirty years later, the cave city of Matera still stands on the ravine over the River Gravina, a dinosaurian pile the colour of the sandy earth.
- Amongst these dinosaurian beasts, horses were keeping cool in the hazy, humid heat, by standing knee deep in the shallow water.
- This, the last period of dinosaurian evolution, was also the period of their greatest diversity, although only a fraction of the types (mainly latest Cretaceous Western North American and Asian forms) are known.
mid 19th century: from modern Latin dinosaurus, from Greek deinos 'terrible' + sauros 'lizard'.
More definitions of dinosaurDefinition of dinosaur in:
- The US English dictionary