tyrannosaur

noun

ty·​ran·​no·​saur tə-ˈra-nə-ˌsȯr 

tī-

plural tyrannosaurs

1

: a massive North American tyrannosaurid dinosaur (Tyrannosaurus rex) : tyrannosaurus rex

2

: tyrannosaurid

Examples of tyrannosaur in a Sentence

Recent Examples on the Web

That's an arena of future research and discovery, along with fleshing out the varied biologies and behaviors of this growing group of tyrannosaurs. —Ari Daniel, NPR, 30 Oct. 2025

However, not every smaller tyrannosaur skeleton should be classified as Nanotyrannus, according to Brusatte. —Katie Hunt, CNN Money, 30 Oct. 2025

While being 100% certain is a bold stance in paleontology, the researchers are confident in their findings, after examining more than 200 tyrannosaur fossils in this study. —New Atlas, 30 Oct. 2025

In their study, Zanno and her colleagues re-analysed the duelling tyrannosaur, examining growth rings in the bones, developmental anatomical features and patterns of fusion in its spinal bones. —Ian Randall, MSNBC Newsweek, 30 Oct. 2025

Word History

Etymology

New Latin Tyrannosaurus, from Greek tyrannos tyrant + sauros lizard

First Known Use

1905, in the meaning defined at sense 1

Rhymes for tyrannosaur

• conquistador
• forevermore
• hereinbefore
• kinetochore
• kwashiorkor
• abhor
• abor
• adore
• afore
• ardour
• ashore
• backdoor

Kids Definition

tyrannosaur

noun

ty·​ran·​no·​saur tə-ˈran-ə-ˌsȯ(ə)r 

tī-

: a very large North American flesh-eating dinosaur of the Cretaceous period that had small forelegs and walked on its hind legs