We found 17 dictionaries that define the word rationalisation:

General (11 matching dictionaries)

1. rationalisation: Collins English Dictionary
2. rationalisation: Vocabulary.com
3. Rationalisation, rationalisation: Wordnik
4. rationalisation: Cambridge Advanced Learner's Dictionary
5. rationalisation: Wiktionary
6. rationalisation: Dictionary.com
7. Rationalisation (mathematics), Rationalisation (sociology), Rationalisation: Wikipedia, the Free Encyclopedia
8. rationalisation: Rhymezone
9. rationalisation: FreeDictionary.org
10. rationalisation: Mnemonic Dictionary
11. rationalisation: TheFreeDictionary.com

Business (3 matching dictionaries)

12. rationalisation: Legal dictionary
13. rationalisation: Financial dictionary
14. Accounting, Business Studies and Economics Dictionary (No longer online)

Computing (1 matching dictionary)

15. rationalisation: Encyclopedia

Medicine (2 matching dictionaries)

16. rationalisation: Merriam-Webster Medical Dictionary
17. rationalisation: Medical dictionary

(Note: See rationalisations as well.)

Definitions from Wiktionary (Rationalisation) ▸ noun:  Non-Oxford British English standard spelling of rationalization. [The process or result of rationalizing.] Similar: systematisation, rationalization, systematization, rationalising, reorganisation, intellectualisation, externalisation, systemisation, corporatisation, realisation, more... Opposite: irrationalisation Types: self-deception, wishful thinking, confirmation bias, more... Adjectives: further, economic, such, industrial, structural, mere, greater, capitalist, considerable, complete, major Colors:     gray,     blue,     white,     silver,     beige, more... ▸ Words similar to rationalisation ▸ Usage examples for rationalisation ▸ Idioms related to rationalisation ▸ Wikipedia articles (New!) ▸ Popular adjectives describing rationalisation ▸ Words that often appear near rationalisation ▸ Rhymes of rationalisation ▸ Invented words related to rationalisation