al·​lo·​saur | \ ˈa-lə-ˌsȯr How to pronounce allosaur (audio) \

Definition of allosaur

: 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, "Tyrannosaurus Rex: Scary. Smart. Social?," 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, "World's biggest T. rex discovered," 26 Mar. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'allosaur.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of allosaur

circa 1934, in the meaning defined above

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The first known use of allosaur was circa 1934

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Cite this Entry

“Allosaur.” Dictionary, Merriam-Webster, Accessed 27 Feb. 2021.

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