mosasaur
/ˈmoʊsəˌsɔr/
noun
- An extinct marine reptile from the Cretaceous period, with a long body, flippers, and a large head, related to modern monitor lizards.
- In the movie, a giant mosasaur leaps out of the water to catch a dinosaur.
- Paleontologists discovered a new species of mosasaur in a quarry in Kansas.
- The museum's fossil exhibit featured a complete skeleton of a mosasaur that once swam in ancient seas.