We found 20 dictionaries that define the word invalidation:

General (15 matching dictionaries)

1. invalidation: Merriam-Webster
2. invalidation: Oxford Learner's Dictionaries
3. invalidation: Collins English Dictionary
4. invalidation: Vocabulary.com
5. Invalidation, invalidation: Wordnik
6. invalidation: Cambridge Advanced Learner's Dictionary
7. invalidation: Wiktionary
8. Invalidation, invalidation: Dictionary.com
9. Invalidation: Online Plain Text English Dictionary
10. invalidation: Webster's Revised Unabridged, 1913 Edition
11. invalidation: Rhymezone
12. Invalidation: AllWords.com Multi-Lingual Dictionary
13. invalidation: FreeDictionary.org
14. invalidation: Mnemonic Dictionary
15. invalidation: TheFreeDictionary.com

Art (1 matching dictionary)

16. Literary Criticism (No longer online)

Business (2 matching dictionaries)

17. invalidation: Merriam-Webster Legal Dictionary
18. invalidation: Legal dictionary

Computing (1 matching dictionary)

19. invalidation: Encyclopedia

Religion (1 matching dictionary)

20. Scientology® and Dianetics® (No longer online)

(Note: See invalidate as well.)

Definitions from Wiktionary (invalidation) ▸ noun:  The act of invalidating, or the state of being invalidated Similar: annulment, invalidness, invalidity, invalidhood, invalidship, nonvalidity, invalidcy, invalidism, disablement, irritancy, more... Opposite: validation, confirmation, corroboration, verification, endorsement Phrases: Cache invalidation, emotional invalidation, more... Adjectives: judicial, such, possible, self, facial, partial, consistent, automatic, complete, further, constitutional ▸ Words similar to invalidation ▸ Usage examples for invalidation ▸ Idioms related to invalidation ▸ Wikipedia articles (New!) ▸ Popular adjectives describing invalidation ▸ Words that often appear near invalidation ▸ Rhymes of invalidation ▸ Invented words related to invalidation