Meaning of the word "irrational number" in English

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

irrational number

US /ɪˈræʃ.ən.əl ˈnʌm.bɚ/
UK /ɪˈræʃ.ən.əl ˈnʌm.bə/
"irrational number" picture

Noun

a real number that cannot be expressed as a ratio of two integers and has a non-repeating, infinite decimal expansion

Example:
The square root of two is a famous irrational number.
Pi is an irrational number, meaning its decimals go on forever without a pattern.