Use the adjective rational to describe people or ideas that operate according to logic or reason. While your brother has an artistic temperament, you have a rational one.

“We strive for precision in our cooking, in our kitchens and in our restaurants, and RATIONAL has become one of those fundamental pieces of equipment that we rely on.”

RATIONAL definition: 1. based on clear thought and reason: 2. (of a number) that can be expressed as the ratio of two…. Learn more.

Define rational. rational synonyms, rational pronunciation, rational translation, English dictionary definition of rational. adj. 1. Having or exercising the ability to reason.

Definition of rational adjective in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Rational decisions and thoughts are based on reason rather than on emotion. He's asking you to look at both sides of the case and come to a rational decision. Mary was able to short-circuit her stress …

Jan 20, 2026 · Logically sound; not self-contradictory or otherwise absurd. His statements were quite rational.

The meaning of RATIONAL is having reason or understanding. How to use rational in a sentence.

rational, adj. & adv. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Rational comes from the Latin word rationalis, meaning reasonable or logical. If you're rational, you do things based on logic, as opposed to impulse or whimsy. The original meaning in English was of …