rational Meaning, Definition & Usage
noun an integer or a fraction
adjective consistent with or based on or using reason
- rational behavior
- a process of rational inference
- rational thought
adjective satellite of or associated with or requiring the use of the mind
- intellectual problems
- the triumph of the rational over the animal side of man
adjective capable of being expressed as a quotient of integers
- rational numbers
adjective satellite having its source in or being guided by the intellect (as distinguished from experience or emotion)
- a rational analysis
Relating to reason; not physical; mental.
Moral philosophy was his chiefest end; for the rational, the natural, and mathematics . . . were but simple pastimes in comparison of the other. Sir T. North.
Having reason, or the faculty of reasoning; endowed with reason or understanding; reasoning.
It is our glory and happiness to have a rational nature. Law.
Agreeable to reason; not absurd, preposterous, extravagant, foolish, fanciful, or the like; wise; judicious; as, rationalconduct; a rationalman.
(Chem.) Expressing the type, structure, relations, and reactions of a compound; graphic; -- said of formulæ. See under Formula. rational drug design. Syn. -- Sane; sound; intelligent; reasonable; sensible; wise; discreet; judicious.-- Rational, reasonable. Rational has reference to reason as a faculty of the mind, and is opposed to traditional; as, a. In these cases the speculative reason is more particularly, referred to. Reasonable has reference to the exercise of this faculty for practical purposes, and means, governed or directed by reason; rationalbeing, a rationalstate of mind, rationalviews, etc as,. reasonableprospect of success
What higher in her society thou find'st Attractive, human, rational, love still. Milton.
A law may be reasonable in itself, although a man does not allow it, or does not know the reason of the lawgivers. Swift.
A rational being.Young.