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 Around 125 million years ago, for example, Early Cretaceous China was home to a large, 30-foot-long tyrannosaur called Yutyrannus. Riley Black, Smithsonian Magazine, 8 Sep. 2021 That story line is supposed to come across as a chilling parable about the excesses of business-minded gene modification, but locusts make for a far less effective adversary than a good old-fashioned tyrannosaur. David Sims, The Atlantic, 8 June 2022 The scene fades with the tyrannosaur pair retiring to a jungle clearing, a real tropical location. Bryan Alexander, USA TODAY, 25 May 2022 The same relationship is apparent in the Early Cretaceous, 125 million years ago, when the tyrannosaur Eotyrannus lived alongside the larger Neovenator in prehistoric England. Riley Black, Smithsonian Magazine, 8 Sep. 2021 The better understanding of tyrannosaur evolution in the new exhibit has also been aided by advanced technology. Amy Schwabe, Milwaukee Journal Sentinel, 17 Feb. 2022 Scaled to tyrannosaur size, that honk becomes a bass-baritone mega war trumpet. Michael B. Habib, Scientific American, 1 Jan. 2022 One such tyrannosaur found in the Bissekty Formation includes Timurlengia, a 10-foot-long predator that would have conflicted with the Ulughbegsaurus. Lawrence Richard, Fox News, 10 Sep. 2021 What about the Appalachiosaurus, an Alabama tyrannosaur that was a distant cousin of the very famous T-rex? Dennis Pillion | Dpillion@al.com, al, 29 Dec. 2021 See More

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.

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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The first known use of tyrannosaur was in 1924

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Last Updated

20 Jul 2022

Cite this Entry

“Tyrannosaur.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tyrannosaur. Accessed 14 Aug. 2022.

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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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