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.

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

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

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 …

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

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

Designating or of a real number or quantity expressible as the ratio of two integers, with the second integer not being equal to zero: all integers and fractions are rational numbers.

sensible or reasoned. Deciding to stay in during the ice storm was a rational choice. Fear of a spider known to be venomous is completely rational, but intense fear of harmless spiders is not. I know …