ty·​ran·​no·​saur | \ tə-ˈra-nə-ˌsȯr How to pronounce tyrannosaur (audio) , tī- \

Definition of tyrannosaur

1 : a massive North American tyrannosaurid (Tyrannosaurus rex)

Examples of tyrannosaur in a Sentence

Recent Examples on the Web Paleontologists developed the theory while studying a mass tyrannosaur death site found seven years ago in the Grand Staircase-Escalante National Monument in southern Utah. David Bressan, Forbes, 20 Apr. 2021 Ferocious tyrannosaur dinosaurs may not have been solitary predators as long envisioned, but more like social carnivores such as wolves, new research unveiled Monday found. Fox News, 20 Apr. 2021 This finding is based on the discovery of a handful of tyrannosaur skeletons found in the same location in a lakebed where the animals are presumed to have drowned. Mike Wehner, BGR, 20 Apr. 2021 Titus noticed what turned out to be a tyrannosaur ankle bone protruding from the ground. Brian Maffly, The Salt Lake Tribune, 19 Apr. 2021 The tyrannosaur, for instance, will shed light how T. rex went from hatchling to hulking predator. Michael Greshko, National Geographic, 17 Nov. 2020 Imagine a tyrannosaur striding through the snow, leaving three-toed footprints in the powder as flurries fall on the fuzz along the dinosaur’s back. Riley Black, Smithsonian Magazine, 3 Dec. 2020 Some of the other questions researchers want to answer about the fossils include determining if molecules are preserved in the skin impressions and if the tyrannosaur fossil shows evidence of feathers. Ashley Strickland, CNN, 17 Nov. 2020 The local tyrannosaur in the Prince Creek Formation was not a familiar species seen elsewhere, but a unique and smaller predator—roughly the size of a polar bear— that Fiorillo and colleagues dubbed Nanuqsaurus. Riley Black, Smithsonian Magazine, 3 Dec. 2020

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

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First Known Use of tyrannosaur

1924, in the meaning defined at sense 1

History and Etymology for tyrannosaur

New Latin Tyrannosaurus, from Greek tyrannos tyrant + sauros lizard

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Time Traveler for tyrannosaur

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The first known use of tyrannosaur was in 1924

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Statistics for tyrannosaur

Last Updated

27 Apr 2021

Cite this Entry

“Tyrannosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tyrannosaur. Accessed 18 Jun. 2021.

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More Definitions for tyrannosaur


ty·​ran·​no·​saur | \ tə-ˈra-nə-ˌsȯr How to pronounce tyrannosaur (audio) , tī- \

Kids Definition of tyrannosaur

: a very large North American meat-eating dinosaur that had small forelegs and walked on its hind legs

More from Merriam-Webster on tyrannosaur

Britannica.com: Encyclopedia article about tyrannosaur


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