[ rash-uh-nl, rash-nl ]
/ ˈræʃ ə nl, ˈræʃ nl /
agreeable to reason; reasonable; sensible: a rational plan for economic development.
having or exercising reason, sound judgment, or good sense: a calm and rational negotiator.
being in or characterized by full possession of one's reason; sane; lucid: The patient appeared perfectly rational.
endowed with the faculty of reason: rational beings.
of, relating to, or constituting reasoning powers: the rational faculty.
proceeding or derived from reason or based on reasoning: a rational explanation.
- capable of being expressed exactly by a ratio of two integers.
- (of a function) capable of being expressed exactly by a ratio of two polynomials.
Classical Prosody. capable of measurement in terms of the metrical unit or mora.
Mathematics. rational number.
Is “Anti” Actually An Inclusive Term?It might surprise you to know that the negative anti is being hailed as a more inclusive way to talk about groups facing discrimination.
Origin of rational
ra·tion·al·ly, adverbra·tion·al·ness, nounan·ti·ra·tion·al, adjectivean·ti·ra·tion·al·ly, adverb
hy·per·ra·tion·al, adjectivehy·per·ra·tion·al·ly, adverbnon·ra·tion·al, adjectivenon·ra·tion·al·ly, adverbo·ver·ra·tion·al, adjectiveo·ver·ra·tion·al·ly, adverbpre·ra·tion·al, adjectivequa·si-ra·tion·al, adjectivequa·si-ra·tion·al·ly, adverbtrans·ra·tion·al, adjectivetrans·ra·tion·al·ly, adverbul·tra·ra·tion·al, adjectiveul·tra·ra·tion·al·ly, adverbun·ra·tion·al, adjectiveun·ra·tion·al·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for anti-rational
Not only are judgements of worth never rationalizable—they are anti-rational.Tragic Sense Of Life|Miguel de Unamuno
This amounts to saying that reality is never fully rational, but is engaged in a struggle between the rational and anti-rational.
British Dictionary definitions for anti-rational
/ (ˈræʃənəl) /
using reason or logic in thinking out a problem
in accordance with the principles of logic or reason; reasonable
of sound mind; sanethe patient seemed quite rational
endowed with the capacity to reason; capable of logical thoughtman is a rational being
maths expressible as a ratio of two integers or polynomialsa rational number; a rational function
maths a rational number
Derived Formsrationally, adverbrationalness, noun
Word Origin for rational
C14: from Latin ratiōnālis, from ratiō reason
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for anti-rational
[ răsh′ə-nəl ]
Having or exercising the ability to reason.
Influenced by reasoning rather than by emotion.
Of sound mind; sane.
Based on scientific knowledge or theory rather than practical observation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.