Rational

Definition of Rational

Ra´tion`al   Pronunciation: răsh´ŭn`al
a.1.Relating to the 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.
2.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.
3.Agreeable to reason; not absurd, preposterous, extravagant, foolish, fanciful, or the like; wise; judicious; as, rational conduct; a rational man.
4.(Chem.) Expressing the type, structure, relations, and reactions of a compound; graphic; - said of formulæ. See under Formula.
Rational horizon
b - (Astron.) See Horizon, 2 (b).
Rational quantity
(Alg.) one that can be expressed without the use of a radical sign, or in exact parts of unity; - opposed to irrational or radical quantity.
Rational symptom
(Med.) one elicited by the statements of the patient himself and not as the result of a physical examination.
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.
n.1.A rational being.

Related Words

acceptable, admissible, algorismic, algorithmic, aliquot, all there, analytic, balanced, bright, calm, cardinal, cerebral, circumspect, clear-eyed, clearheaded, clearminded, cogent, commonsense, compos mentis, conceptive, conceptual, consequent, cool, coolheaded, credible, decimal, differential, digital, discriminating, discursive, down-to-earth, earthy, endopsychic, enlightened, even, everyday, exponential, figural, figurate, figurative, finite, fractional, hardheaded, healthy-minded, ideational, imaginary, impair, impossible, infinite, informed, integral, intellectual, internal, just, justifiable, knowing, knowledgeable, legitimate, level-headed, levelheaded, logarithmic, logical, logometric, lucid, matter-of-fact, mental, mentally sound, negative, noetic, noological, normal, not so dumb, numeral, numerary, numerative, numeric, odd, of sound mind, ordinal, pair, philosophical, phrenic, plausible, positive, positivistic, possible, practical, practical-minded, pragmatic, prime, prudent, psychic, psychologic, radical, ratiocinative, ratiocinatory, real, realist, realistic, reasonable, reasoning, reciprocal, right, sane-minded, scientific, scientistic, secular, sober, sober-minded, sophic, sound-minded, sound-thinking, spiritual, stable, straight-thinking, strong-minded, subjective, submultiple, surd, thinking, together, transcendental, understanding, unideal, unidealistic, unromantic, unsentimental, well-argued, well-balanced, well-founded, well-grounded, wholesome, worldly
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