T. rex

[tee reks]

noun

1. tyrannosaur.

Word History and Origins

Origin of T. rex¹

First recorded in 1980–85; abbreviation of Tyrannosaurus rex ( def. )

Example Sentences

Its long, shallow skull indicates it lacked the bone-crushing bite strength of T. rex.

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Fossil evidence shows that Tyrannosaurs thrived in North America for several million years before returning to Asia, where their lineage split into two branches: one evolved into massive predators like T. rex, while the other produced more slender, long-snouted types nicknamed "Pinocchio rexes."

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“Everybody wants the T. rex or the triceratops,” Gsell said.

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Children ages 5-8 will need to look elsewhere to read about bloodthirsty old favorites such as the T. rex.

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When promoting his memoir “Happy Forever: My Musical Adventures with the Turtles, Frank Zappa, T. Rex, Flo & Eddie, and More” in 2023, Volman went public with his 2020 diagnosis of Lewy body dementia, a disease that results in a decline in cognitive ability, affecting reasoning, memory and movement.

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When To Use

What is a T. rex?

T. rex is short for Tyrannosaurus rex, a giant, meat-eating dinosaur that walked on two legs and had a long tail and a big head with sharp teeth (and, yes, two little arms).The name Tyrannosaurus rex comes from the Greek words tyranno (“tyrant”) and saurus (“lizard”) and the Latin word rex (“king”). So, Tyrannosaurus rex means something like “king of the tyrant lizards.” It is commonly called T. rex for short.The name is fitting: Tyrannosaurus rex is one of the largest land predators that has ever lived. It was the largest of the tyrannosaurs, reaching a length of 47 feet (14.3 m) or more.People often list the T. rex as their favorite dinosaur, and its popularity has grown through many pop culture depictions, such as its appearances in the Jurassic Park series of movies and books. However, to be scientifically precise about it, the T. rex lived during the Late Cretaceous period, about 90–65 million years ago, around the end of the age of dinosaurs.