rationality

reasonableness / sanity / ratio property

Noun

This term describes the capacity for logical thought and the adherence to reason. It carries a strong connotation of objectivity and stability, often contrasted with emotional impulsivity or irrational behavior. In a psychological or legal context, it specifically refers to the state of sanity and the ability to make conscious, reasoned decisions. In mathematical contexts, the word takes on a precise technical meaning regarding the nature of numbers. Unlike its use in philosophy or psychology, mathematical rationality is a binary property of a number's structure rather than a quality of a mind.

Meanings

Noun

The quality of being based on or in accordance with reason or logic.

"The decision was praised for its rationality and fairness."

Noun

"The patient showed signs of returning to full rationality after the crisis."

Noun

The property of a number being expressible as a fraction of two integers.

"In mathematics, the rationality of a number determines if it can be written as a ratio."

Last Updated: June 14, 2026•Report an Error