irrational : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: irrational	by the DICT Development Group
2 results for irrational
From WordNet (r) 3.0 (2006) [wn]:
irrational adj not consistent with or using reason; "irrational fears"; "irrational animals" Antonym(s): rational real but not expressible as the quotient of two integers; "irrational numbers" Antonym(s): rational n a real number that cannot be expressed as a rational number Synonym(s): irrational number, irrational
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Irrational \Irra"tional\, a. [L. irrationalis: cf. F. irrationnel. See {In-} not, and {Rational}.] 1. Not rational; void of reason or understanding; as, brutes are irrational animals. 2. Not according to reason; absurd; foolish. It seemed utterly irrational any longer to maintain it. --I. Taylor. 3. (Math.) Not capable of being exactly expressed by an integral number, or by a vulgar fraction; surd; -- said especially of roots. See {Surd}. Syn: Absurd; foolish; preposterous; unreasonable; senseless. See {Absurd}.