English dictionary

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English adjective: rational

1. rational consistent with or based on or using reason

SamplesRational behavior.
A process of rational inference.
Rational thought.

Similarcoherent, demythologised, demythologized, intelligent, logical, lucid, reasonable, reasoning, sane, thinking

See alsological, reasonable, sane, sensible


2. rational of or associated with or requiring the use of the mind

SamplesIntellectual problems.
The triumph of the rational over the animal side of man.

Synonymsintellectual, noetic



3. rational capable of being expressed as a quotient of integers

SamplesRational numbers.

Domain categorymath, mathematics, maths


4. rational having its source in or being guided by the intellect (as distinguished from experience or emotion)

SamplesA rational analysis.



English noun: rational

1. rational (quantity) an integer or a fraction

Synonymsrational number

Broader (hypernym)real, real number

Narrower (hyponym)fraction

Based on WordNet 3.0 copyright © Princeton University.
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