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

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

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.

rational adjective (WITHOUT EMOTION) able to make decisions based on facts and not be influenced by your emotions or imagination:

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

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.

agreeable to reason; reasonable; sensible: a rational plan for economic development. having or exercising reason, sound judgment, or good sense: a calm and rational negotiator. being in or …

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 …

The state or quality of being rational. Compare negative capability. [From Latin rationalis rational, from ratio, -onis reason or reckoning, from reri, ratus to think]

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