T. rex

noun

ˈtē-ˈreks 

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

Paleontologists recently solved the riddle of whether two fossil specimens were young T. rexes or a whole different species. —JSTOR Daily, 24 June 2024

The Past New theories reveal the ferocious T-Rex as… adorable? The American Museum of Natural History presents the new, more accurate T. rex. —Big Think, 24 June 2024

Jijo Malayil 20 days ago 0 Science 3 little fossil hunters discover rare 67-million-year-old teen T. rex The discovery has been turned into a documentary narrated by Sir Sam Neill, who famously portrayed Dr. Alan Grant in the Jurassic Park films. —Interesting Engineering, 23 June 2024

Related article Hiking family discovers rare T. rex fossil However, their early evolution had only been known from fossils found in the Northern Hemisphere, according to the study published in the journal Current Biology Monday. —Amarachi Orie, CNN, 19 June 2024

Word History

Etymology

New Latin, short for Tyrannosaurus rex

First Known Use

1915, in the meaning defined above

Kids Definition

T. rex

noun

ˈtē-ˈreks 

: tyrannosaur