English Explanatory Dictionary

irrational

English dictionary entry

Meanings

adj
  1. Not rational; unfounded, nonsensical or wrong-headed.
  2. Of a real number, that cannot be written as the ratio of two integers.
noun
  1. A real number that can not be expressed as the quotient of two integers, an irrational number.

Pronunciation

ĭră'sh(ə)nəl /ɪˈɹæʃ.(ə.)nəl/ LL-Q1860 (eng)-Vealhurl-irrational.wav

Word forms

irrational more irrational most irrational irrationals

Etymology

From Latin irratiōnālis, from ir- + ratiōnālis.

Antonyms

rational

Derived words

irrationalism irrationalist irrationalistic irrationality irrationalization irrationalize irrationally irrationalness irrational number nonirrational
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