Complete Definition of "irrational"

English

Pronunciation
Ä­ră'sh(ə)nəl, /ɪˈræʃ(ə)nəl/, /<tt>I"r{S(@)n[email protected]</tt>/

Etymology

From ancient Greece
circa 500 B.C.
"Irrational" originally meant only that a number could not be expressed as a ratio. But for the pythagoreans it came to mean something threatening, a hint that their world view might not make sense, which is today the other meaning of "irrational".

ir- + rational

Adjective
irrational (compar more irrational, superl most irrational)

  1. Not rational; unfounded or nonsensical.

#:an irrational decision

  1. mathematics (no comparative or superlative) Of a real number, that cannot be written as the ratio of two integers.

#:The number &pi; is irrational.

Translations

trans-top|unfounded or nonsensical
Dutch: irrationeel, irrationele, onzinnig, onzinnige, onredelijk, onredelijke
Finnish: epälooginen, irrationaalinen
German: irrational#German|irrational
trans-mid
Japanese: 不合理 (fugōri)
Polish: nieracjonalny, irracjonalny m
Swedish: irrationell
Telugu: అసంబద్ధము (asaMbaddhamu)
trans-bottom

trans-top|mathematics: of a number
Dutch: irrationaal, irrationale
Esperanto: nereala
Finnish: irrationaalinen
French: irrationnel m, irrationnelle f
German: irrational#German|irrational
trans-mid
Japanese: 無理数 (murisū)
Swedish: irrationell
trans-bottom

Translations to be checked

checktrans
ttbc|Indonesian: irasional, tak masuk akal

Derived terms
irrational number

am:irrational
de:irrational
fa:irrational
fr:irrational
io:irrational
id:irrational
pl:irrational
ru:irrational
sv:irrational
te:irrational
vi:irrational
zh:irrational

Revision and Credits for"irrational"
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