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
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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
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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
Cite this Entry
“Allosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/allosaur. Accessed 4 Nov. 2025.
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