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rationality

[rash-uh-nal-i-tee] /ˌræʃ əˈnæl ɪ ti/
noun, plural rationalities.
1.
the state or quality of being rational.
2.
the possession of reason.
3.
agreeableness to reason; reasonableness.
4.
the exercise of reason.
5.
a reasonable view, practice, etc.
Origin of rationality
1560-1570
1560-70; < Late Latin ratiōnālitās reasonableness. See rational, -ity
Related forms
antirationality, noun, adjective
nonrationality, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for rationality

rationality

/ˌræʃəˈnælɪtɪ/
noun (pl) -ties
1.
the state or quality of being rational or logical
2.
the possession or utilization of reason or logic
3.
a reasonable or logical opinion
4.
(economics) the assumption that an individual will compare all possible combinations of goods and their prices when making purchases
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
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Word Origin and History for rationality
n.

1620s, "quality of having reason;" 1650s, "fact of being agreeable to reason," from French rationalité, from Late Latin rationalitas "reasonableness, rationality" (also source of Spanish racionalidad, Italian razionalita), from Latin rationalis (see rational).

Online Etymology Dictionary, © 2010 Douglas Harper
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