English-Thai: NECTEC's Lexitron-2 Dictionary [with local updates] irrational [ADJ] ไม่มีเหตุผล, See also: ปราศจากเหตุผล, Syn. unreasonable, absurd, illogical, Ant. rational; logical irrational number [N] จำนวนอตรรกยะ, See also: จำนวนที่ไม่ลงตัว irrationality [N] ความไม่มีเหตุผล, See also: การกระทำหรือความคิดที่ปราศจากเหตุผล

English-Thai: HOPE Dictionary [with local updates] irrational (อิแรช'เชินเนิล) adj. ไร้เหตุผล,ไม่มีสติสัมปชัญญะ, (เลข) ไม่ลงตัว. n. เลขไม่ลงตัว., S. . irrationalness n., S. demented irrationality (อิแรชชะแนล'ลิที) n. ความไม่สมเหตุสมผล,การกระทำที่ไม่สมเหตุสมผล

English-Thai: Nontri Dictionary irrational (adj) ไม่มีเหตุผล,ไม่สมเหตุสมผล,ไม่ลงตัว

Thai-English: NECTEC's Lexitron-2 Dictionary [with local updates] จำนวนอตรรกยะ [N] irrational number, Example: จำนวนอตรรกยะเป็นสับเซตของจำนวนจริง, Count unit: จำนวน, Thai definition: จำนวนที่สามารถเขียนให้เป็นรูปทศนิยมไม่รู้จบประเภทไม่ซ้ำได้

Oxford Advanced Learners Dictionary (pronunciation guide only) irrational (j) (i1 r a1 sh @ n l) irrationally (a) (i1 r a1 sh @ n @ l ii)

CMU English Pronouncing Dictionary IRRATIONAL IH0 R AE1 SH AH0 N AH0 L IRRATIONALITY IH0 R AE2 SH AH0 N AE1 L AH0 T IY0 IRRATIONALLY IH0 R AE1 SH AH0 N AH0 L IY0 IRRATIONALLY IH0 R AE1 SH N AH0 L IY0

Japanese-English: EDICT Dictionary イラショナル [いらしょなる, irashonaru] irrational [Add to Longdo] 無理関数 [むりかんすう, murikansuu] irrational function [Add to Longdo]

Japanese-English: COMPDICT Dictionary 無理数 [むりすう, murisuu] irrational number [Add to Longdo]

German-English: TU-Chemnitz DING Dictionary Irrationalität {f} irrationality [Add to Longdo] irrational {adj} irrational [Add to Longdo] irrational {adv} irrationally [Add to Longdo] irrational surd [Add to Longdo] irrationale Zahl irrational number [Add to Longdo] unvernünftig irrational [Add to Longdo] unvernünftig {adv} irrationally [Add to Longdo]

Result from Foreign Dictionaries (4 entries found)

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  irrational \ir*ra"tion*al\ ([i^]r*r[a^]sh"[u^]n*al), a. [L.
     irrationalis: cf. F. irrationnel. See {In-} not, and
     {Rational}.]
     [1913 Webster]
     1. Not rational; void of reason or understanding; as, brutes
        are irrational animals.
        [1913 Webster]
  
     2. Not according to reason; having no rational basis; clearly
        contrary to reason; easily disproved by reasoning; absurd;
        -- of assertions and beliefs. Hence, of actions: foolish;
        unreasonable.
        [1913 Webster +PJC]
  
              It seemed utterly irrational any longer to maintain
              it.                                   --I. Taylor.
        [1913 Webster]
  
     3. (Math.) Not capable of being exactly expressed by an
        integral number, nor by a ratio of integral numbers; surd;
        -- said especially of roots. See {Surd}.
  
     Syn: Absurd; foolish; preposterous; unreasonable; senseless.
          See {Absurd}.
          [1913 Webster]

From WordNet (r) 2.0 (August 2003) [wn]:

  irrational
      adj 1: not consistent with or using reason; "irrational fears";
             "irrational animals" [ant: {rational}]
      2: real but not expressible as the quotient of two integers;
         "irrational numbers" [ant: {rational}]

From German-English Freedict dictionary [fd-deu-eng]:

  irrational [iratsiːoːnaːl]
     irrational; irrationally; surd
  

From English-German Freedict dictionary [fd-eng-deu]:

  irrational [iræʃənl]
     irrational; unvernünftig
  

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