rational

rational
rationally, adv.rationalness, n.
/rash"euh nl, rash"nl/, adj.
1. agreeable to reason; reasonable; sensible: a rational plan for economic development.
2. having or exercising reason, sound judgment, or good sense: a calm and rational negotiator.
3. being in or characterized by full possession of one's reason; sane; lucid: The patient appeared perfectly rational.
4. endowed with the faculty of reason: rational beings.
5. of, pertaining to, or constituting reasoning powers: the rational faculty.
6. proceeding or derived from reason or based on reasoning: a rational explanation.
7. Math.
a. capable of being expressed exactly by a ratio of two integers.
b. (of a function) capable of being expressed exactly by a ratio of two polynomials.
8. Class. Pros. capable of measurement in terms of the metrical unit or mora.
n.
9. Math. See rational number.
[1350-1400; ME racional < L rationalis, equiv. to ration- (s. of ratio) REASON + -alis -AL1]
Syn. 2. intelligent, wise, judicious, sagacious, enlightened. 6. See reasonable.
Ant. 2. stupid. 3. insane.

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Universalium. 2010.

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  • Rational — Ra tion*al (r[a^]sh [u^]n*al), a. [L. rationalis: cf. F. rationnel. See {Ratio}, {Reason}, and cf. {Rationale}.] 1. Relating to the reason; not physical; mental. [1913 Webster] Moral philosophy was his chiefest end; for the rational, the natural …   The Collaborative International Dictionary of English

  • rational — rational, aux [ rasjɔnal, o ] n. m. • racionale XIIIe; lat. rationale ♦ Didact. 1 ♦ Antiq. Pièce d étoffe ornée de pierreries que le grand prêtre des Hébreux portait sur la poitrine. ⇒ pectoral. 2 ♦ (a. fr. livre rational « livre de raison »; lat …   Encyclopédie Universelle

  • Rational AG — Rechtsform Aktiengesellschaft ISIN DE0007010803 Gründung …   Deutsch Wikipedia

  • raţional — RAŢIONÁL, Ă, raţionali, e, adj. 1. (Adesea adverbial) Conform cu principiile şi cerinţele raţiunii; care poate fi conceput cu ajutorul raţiunii. ♦ (În filozofia raţionalistă) Izvorât sau dedus din raţiune, considerat ca independent de experienţă… …   Dicționar Român

  • rational — rational, reasonable may be applied to men, their acts, utterances, or policies in the senses of having or manifesting the power to reason, or of being in accordance with what reason dictates as right, wise, or sensible. Rational usually implies… …   New Dictionary of Synonyms

  • Rational — may refer to: * Rationality, a concept of reason * Rational number, a number that can be expressed as a ratio of two integers * Rational function, a mathematical function which can be written as the ratio of two polynomial functions * Rational… …   Wikipedia

  • Rational — steht für: das vernunftbegabte und somit rationale Handeln, siehe Rationalität Rational AG, größter Hersteller von Heißluftdämpfern Rational (Heatley Gresham), eine Automobilmarke Rational Software, ehemaliges Softwareunternehmen inzwischen von… …   Deutsch Wikipedia

  • rational — [rash′ən əl] adj. [ME racional < L rationalis < ratio: see REASON] 1. of, based on, or derived from reasoning [rational powers] 2. able to reason; reasoning; in possession of one s reason or sanity 3. showing reason; not foolish or silly;… …   English World dictionary

  • rational — ra·tio·nal / ra shə nəl/ adj 1: having reason or understanding 2: relating to, based on, or guided by reason, principle, fairness, logic, a legitimate state interest, or a consideration of fact age distinctions are not subject to strict scrutiny …   Law dictionary

  • Rational — (v. lat.), 1) vernünftig; 2) (Rationell), vernunftgemäß, auf Ergebnisse eigner Prüfung u. vernünftigen Gründen beruhend, daher theils dem positiven, theils dem blos empirischen u. praktischen entgegengesetzt, s. u. Rationalismus 1); 3) rational… …   Pierer's Universal-Lexikon

  • Rational — Ra tion*al, n. A rational being. Young. [1913 Webster] …   The Collaborative International Dictionary of English

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