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

RATIONAL definition: agreeable to reason; reasonable; sensible. See examples of rational used in a sentence.

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.

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 …

Dec 28, 2025 · Logically sound; not self-contradictory or otherwise absurd. His statements were quite rational.

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