Meaning of the word rex in English

What does rex mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

rex

US /reks/
UK /reks/

Noun

a king (used especially in official titles, e.g., Rex as in Tyrannosaurus Rex)

Example:
The fossil was identified as a Tyrannosaurus Rex.
The Latin word 'rex' means king.