allosaur

noun

al·​lo·​saur ˈa-lə-ˌsȯr 

: any of a family (Allosauridae) of large theropod dinosaurs usually having three clawed digits on each arm and leg and living from the Late Jurassic to the early Cretaceous period

especially : allosaurus

Examples of allosaur in a Sentence

Recent Examples on the Web

That right time began about 100 million years ago, when a period of intense volcanic activity caused a mini-mass extinction in the Northern Hemisphere, killing many of the larger dinosaurs, including allosaurs, the apex predators of their day. —Eric Betz, Discover Magazine, 12 Apr. 2019

There's some evidence that tyrannosaurs may have been faster and more agile than other groups of large predatory dinosaurs, such as the earlier allosaurs. —Michael Greshko, National Geographic, 26 Mar. 2019

Word History

First Known Use

circa 1934, in the meaning defined above