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We found 22 dictionaries with English definitions that include the word invalidation:
Click on the first link on a line below to go directly to a page where "invalidation" is defined.

General (18 matching dictionaries)

1. invalidation: Merriam-Webster.com [home, info]
2. invalidation: Oxford Dictionaries [home, info]
3. invalidation: Collins English Dictionary [home, info]
4. invalidation: Vocabulary.com [home, info]
5. Invalidation, invalidation: Wordnik [home, info]
6. invalidation: Cambridge Advanced Learner's Dictionary [home, info]
7. invalidation: Wiktionary [home, info]
8. Invalidation, invalidation: Dictionary.com [home, info]
9. invalidation: UltraLingua English Dictionary [home, info]
10. Invalidation: Online Plain Text English Dictionary [home, info]
11. invalidation: Webster's Revised Unabridged, 1913 Edition [home, info]
12. invalidation: Rhymezone [home, info]
13. Invalidation: AllWords.com Multi-Lingual Dictionary [home, info]
14. invalidation: Free Dictionary [home, info]
15. invalidation: Mnemonic Dictionary [home, info]
16. invalidation: WordNet 1.7 Vocabulary Helper [home, info]
17. invalidation: LookWAYup Translating Dictionary/Thesaurus [home, info]
18. invalidation: Dictionary/thesaurus [home, info]

Art (1 matching dictionary)

19. invalidation: Literary Criticism [home, info]

Business (1 matching dictionary)

20. invalidation: Legal dictionary [home, info]

Computing (1 matching dictionary)

21. invalidation: Encyclopedia [home, info]

Religion (1 matching dictionary)

22. invalidation: Scientology® and Dianetics® [home, info]

(Note: See invalidator for more definitions.)

Quick definitions from WordNet (invalidation) ▸ noun:  (law) a formal termination (of a relationship or a judicial proceeding etc) ▸ Also see invalidator ▸ Words similar to invalidation ▸ Usage examples for invalidation ▸ Popular adjectives describing invalidation ▸ Words that often appear near invalidation ▸ Rhymes of invalidation ▸ Invented words related to invalidation