rex

Everyday

1. Rex is Latin for "king". It appears in names like Tyrannosaurus rex, "tyrant lizard king". tree →
2. T. rex is a short name for Tyrannosaurus rex, a huge meat-eating dinosaur. tree →
3. Rex is a common name for a dog, and also a boy's name. tree →
4. (formal, UK law) Rex is used in court case names when a king is on the throne: "Rex v Smith" means the Crown (the king's side) against Smith. tree →

In the lessons

In science and stories about dinosaurs, T. rex is the famous giant with tiny arms and huge teeth. In history and Latin, "rex" means king and "regina" means queen. Phrases: T. rex, Tyrannosaurus rex.

Examples

• The T. rex had huge teeth and tiny arms. tree →
• Tyrannosaurus rex means "tyrant lizard king". tree →
• Our dog Rex loves chasing balls. tree →
• We saw a T. rex skeleton at the museum. tree →
• In Latin, rex means king. tree →
• Rex is the new boy in our class. tree →

Note

In Tyrannosaurus rex, rex has a small r; T. rex is written with a capital T and a full stop. As a name, Rex has a capital R. Plural of the Latin word is reges (rarely needed).