Link Centre Dictionary

rationalisation

ra·tio·na·lisation

uncommon uk

noun

1.

(psychiatry) a defense mechanism by which your true motivation is concealed by explaining your actions and feelings in a way that is not threatening

3.

(mathematics) the simplification of an expression or equation by eliminating radicals without changing the value of the expression or the roots of the equation

Origin

Borrowed from French rationalisation, equivalent to rational + -isation or rationalise + -ation.

Related words

WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.