Definition
irrational
adjective
- not based on reason, logic, or clear thinking
- unable to think clearly or make sensible decisions
- of a number that cannot be expressed as a ratio of two integers
Usage: mathematics
noun
- an irrational number
Usage: mathematics
Examples
- Her fear of flying was completely irrational.
- It's irrational to spend all your savings on lottery tickets.
- The patient became irrational after the medication wore off.
- His irrational behavior worried his family.
- Pi is an irrational number that goes on forever.
- The square root of 2 is irrational.
- Mathematicians study both rational and irrational numbers.