variants or less commonly T-Rex
plural T. rexes also T-Rexes
: tyrannosaurus rex
Though no one can actually time a running dinosaur with a stopwatch, scientists still have some idea of how fast T. rex and his companions ran.Lilian T. Hoffecker
We don't know if T. rex hunted alone or in packs, if it pursued live prey or merely scavenged.Discover Magazine
Spielberg's dinosaurs had teeth prominently and terrifyingly on constant display, much like a modern crocodile. [Auburn University professor Thomas] Cullen and his team, however, have shown instead that the T-Rex … had lips that covered their teeth much like a modern monitor lizard.John West
T. rexes were among the largest meat-eaters on Earth during their reign … 144 million years ago. They had to eat a lot, and often, to support their enormous bodies.John Johnson Jr.

Examples of T. rex in a Sentence

Recent Examples on the Web So to find a T. rex at all, and to find one this complete, is truly special. Simrin Singh, CBS News, 6 June 2024 The juvenile dinosaur specimen can give researchers a better understanding of how the T. rex grew and developed, per a Q&A on the museum’s website. Will Sullivan, Smithsonian Magazine, 5 June 2024 In a news conference on Monday, the three boys agreed that the T. rex was their favorite species of dinosaur. Livia Albeck-Ripka, New York Times, 4 June 2024 King Kong’s influence on stop-motion — and fight cinema in general — has been felt since the second that T. rex’s limp body hit the ground. Vikram Murthi, Vulture, 4 Mar. 2024 Theropods — speedy hunters like T. rex and Velociraptor, relocated. Paul Smaglik, Discover Magazine, 15 May 2024 Several studies have found evidence that T. rex engaged in cannibalism. Alex Orlando, Discover Magazine, 1 May 2024 By the last few million years of the dinosaurs’ reign, however, the larger T. rex replaced these lineages. Asher Elbein, New York Times, 11 Jan. 2024 The Ceratosaurus is one of six dinosaurs in the Camp Cretaceous collection, which includes a T. rex, a Baryonyx, Ankylosaurus, and others. Ashley Ziegler, Parents, 13 Apr. 2024

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'T. rex.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, short for Tyrannosaurus rex

First Known Use

1915, in the meaning defined above

Time Traveler
The first known use of T. rex was in 1915

Dictionary Entries Near T. rex

trews

T. rex

trey

Cite this Entry

“T. rex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/T.%20rex. Accessed 20 Jun. 2024.

Kids Definition

T. rex

noun
Last Updated: - Updated example sentences
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