What does "tyrannosaurus" mean?

Any large carnivorous dinosaur, of the genus Tyrannosaurus, found in North America during the late Cretaceous period.

What is a synonym for "tyrannosaurus"?

Common synonyms include: t rex, tyrannosaur, tyrannosaur, tyrannosaurus rex.

Pronounced //tɪˌɹænəˈsɔːɹəs//.

//tɪˌɹænəˈsɔːɹəs// noun

noun ·Rare ·Advanced level

Noun

1
Any large carnivorous dinosaur, of the genus Tyrannosaurus, found in North America during the late Cretaceous period.
2
large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America wordnet

"A six-foot-tall plastic Tyrannosaurus rex stands guard outside Robert Bowen’s fossil shop on Pine Street in downtown, Kemmerer, Wyo."

From translingual Tyrannosaurus, from Ancient Greek τύραννος (túrannos, “tyrant”) + σαῦρος (saûros, “lizard”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.