Tyrannosaurus rex
noun
Ty·ran·no·sau·rus rex
tə-ˌra-nə-ˈsȯr-əs-ˈreks 
(ˌ)tī-
variants
or Tyrannosaurus Rex
or less commonly Tyrannosaurus
or tyrannosaurus
or tyrannosaurus rex
plural Tyrannosaurus rexes or Tyrannosaurus Rexes also Tyrannosauruses or tyrannosauruses or tyrannosaurus rexes
: a massive North American bipedal tyrannosaurid dinosaur (Tyrannosaurus rex) of the late Cretaceous with a large skull, heavy tail, and reduced forelimbs having two clawed digits : tyrannosaur sense 1
Tyrannosaurus rex was … one of the biggest meat-eaters ever. It was over 40 feet tall, and weighed up to 7 tons!—
Wendy Larson
Wendy LarsonA study of the running ability of Tyrannosaurus Rex … suggests that the king of the prehistoric jungle wasn't quite the speedster we once thought.—Andrea Dorfman et al.
Andrea Dorfman et al.During this period, many groups of dinosaurs, including the fearsome tyrannosaurus and the three-horned triceratops, reached their greatest size, 12 meters (40 feet) and 9 meters (30 feet) long, respectively.—Joseph Wallace
Joseph Wallace… in a room full of Tyrannosaurus rexes I meet museum volunteers … who are using brushes and tiny picks on fossils in an area where people can watch and ask questions.—Mel White
Mel WhiteTrue, there may no longer be actual tyrannosauruses running amok, but there are still dinosaur descendants hanging around, and they may even be in your backyard: birds, of course!—Emily Graham
Emily Grahamcalled also T. rex
Examples of Tyrannosaurus rex in a Sentence
Recent Examples on the Web
The McDonald's Dinosaur in Tucson Not to be outdone by teal arches, a Tucson McDonald's has a life-size Tyrannosaurus rex statue near its entrance.
—Tiffany Acosta, The Arizona Republic, 2 Aug. 2024
Of course, there’s also the conspicuous absence of Tyrannosaurus rex wandering around.
—Lauren Leffer, Popular Science, 31 July 2024
Around 66 million years ago, the iconic and terrifying Tyrannosaurus rex roamed the planet.
—Margherita Bassi, Smithsonian Magazine, 31 July 2024
It is now believed that dinosaurs such as Tyrannosaurus rex may have been similarly endowed.
—New Atlas, 24 July 2024
The Cretaceous period is known for its prehistoric titans like the Tyrannosaurus rex and Triceratops — and as the last dinosaur age.
—Irene Wright, Miami Herald, 18 July 2024
In 2017, Griffin underwrote an historic dinosaur exhibit at the Field Museum in Chicago, Illinois, with a $16.5 million gift to support its acquiring Sue the T. rex, a 122-foot-long Tyrannosaurus rex.
—Megan Cerullo, CBS News, 18 July 2024
The Triceratops horridus and Tyrannosaurus rex each died sporting battle scars.
—Ashley Strickland, CNN, 22 June 2024
Sotheby's sold a 200-pound Tyrannosaurus rex head in 1997 for $8.3 million.
—Jennifer Vilcarino, ABC News, 31 May 2024
Tiffany Acosta, The Arizona Republic, 2 Aug. 2024
Of course, there’s also the conspicuous absence of Tyrannosaurus rex wandering around.
—Lauren Leffer, Popular Science, 31 July 2024
Around 66 million years ago, the iconic and terrifying Tyrannosaurus rex roamed the planet.
—Margherita Bassi, Smithsonian Magazine, 31 July 2024
It is now believed that dinosaurs such as Tyrannosaurus rex may have been similarly endowed.
—New Atlas, 24 July 2024
The Cretaceous period is known for its prehistoric titans like the Tyrannosaurus rex and Triceratops — and as the last dinosaur age.
—Irene Wright, Miami Herald, 18 July 2024
In 2017, Griffin underwrote an historic dinosaur exhibit at the Field Museum in Chicago, Illinois, with a $16.5 million gift to support its acquiring Sue the T. rex, a 122-foot-long Tyrannosaurus rex.
—Megan Cerullo, CBS News, 18 July 2024
The Triceratops horridus and Tyrannosaurus rex each died sporting battle scars.
—Ashley Strickland, CNN, 22 June 2024
Sotheby's sold a 200-pound Tyrannosaurus rex head in 1997 for $8.3 million.
—Jennifer Vilcarino, ABC News, 31 May 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'Tyrannosaurus rex.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near Tyrannosaurus rex
Cite this Entry
“Tyrannosaurus rex.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Tyrannosaurus%20rex. Accessed 19 Aug. 2024.
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