rational

ra·tion·al  (rsh-nl)

adj.

1. Having or exercising the ability to reason.

2. Of sound mind; sane.

3. Consistent with or based on reason; logical: rational behavior. See Synonyms at logical.

4. Mathematics Capable of being expressed as a quotient of integers.

n. Mathematics

A rational number.

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[Middle English racional, from Old French racionel, from Latin ratinlis, from rati, ratin-, reason; see reason.]

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ration·al·ly adv.

ration·al·ness n.

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rational

Adjective

1. reasonable or sensible

2. using reason or logic in thinking out a problem

3. capable of reasoning: man is a rational being

4. sane: rational behaviour

5. Maths able to be expressed as a ratio of two integers: a rational number [Latin rationalis]

rationality n
rationally adv

Thesaurus

Noun	1.	rational - an integer or a fraction rational number real, real number - any rational or irrational number fraction - the quotient of two rational numbers
Adj.	1.	rational - consistent with or based on or using reason; "rational behavior"; "a process of rational inference"; "rational thought" logical - capable of or reflecting the capability for correct and valid reasoning; "a logical mind" reasonable, sensible - showing reason or sound judgment; "a sensible choice"; "a sensible person" sane - mentally healthy; free from mental disorder; "appears to be completely sane" irrational - not consistent with or using reason; "irrational fears"; "irrational animals"
	2.	rational - of or associated with or requiring the use of the mind; "intellectual problems"; "the triumph of the rational over the animal side of man" intellectual, noetic mental - involving the mind or an intellectual process; "mental images of happy times"; "mental calculations"; "in a terrible mental state"; "mental suffering"; "free from mental defects"
	3.	rational - capable of being expressed as a quotient of integers; "rational numbers" math, mathematics, maths - a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement irrational - real but not expressible as the quotient of two integers; "irrational numbers"
	4.	rational - having its source in or being guided by the intellect (as distinguished from experience or emotion); "a rational analysis" intellectual - appealing to or using the intellect; "satire is an intellectual weapon"; "intellectual workers engaged in creative literary or artistic or scientific labor"; "has tremendous intellectual sympathy for oppressed people"; "coldly intellectual"; "sort of the intellectual type"; "intellectual literature"

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rational

adjective 1. sensible, sound, wise, reasonable, intelligent, realistic, logical, enlightened, sane, lucid, judicious, sagacious

adjective 2. reasoning, thinking, cognitive, cerebral, ratiocinative

adjective 3. sane, balanced, normal, all there (informal) lucid, of sound mind, compos mentis (Latin) in your right mind << OPPOSITE insane

Translations

rational [ˈræʃənl] adj → racional; [solution, reasoning] → lógico, razonable; [person] → cuerdo, sensato

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rational [ˈræʃənl] adj → raisonnable, sensé(e); [solution, reasoning] → logique;

(Med) [person] → lucide

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rational [ˈræʃənl] adj → rational, vernünftig

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rational [ˈræʃənl] adj → razionale, ragionevole; [solution, reasoning] → logico/a