Noun

• In Mathematics, Rational Numbers are those numbers that can be expressed in the form of p/q, where q is not equal to 0.

Adjective

• Agreeable to reason.
• Having sound judgment.
• If we describe some thoughts or decisions as rational, then it means that they are based on reasons or facts and not on emotions.
• If someone is considered rational, it means they are sensible and make decisions based on reason and not on emotions.