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We found 12 dictionaries with English definitions that include the word invalidator:
Click on the first link on a line below to go directly to a page where "invalidator" is defined.

General (11 matching dictionaries)

1. invalidator: Merriam-Webster.com [home, info]
2. invalidator: Oxford Dictionaries [home, info]
3. invalidator: Collins English Dictionary [home, info]
4. invalidator: Vocabulary.com [home, info]
5. invalidator: Wiktionary [home, info]
6. invalidator: Dictionary.com [home, info]
7. invalidator: Rhymezone [home, info]
8. invalidator: Free Dictionary [home, info]
9. invalidator: Mnemonic Dictionary [home, info]
10. invalidator: LookWAYup Translating Dictionary/Thesaurus [home, info]
11. invalidator: Dictionary/thesaurus [home, info]

Business (1 matching dictionary)

12. invalidator: Legal dictionary [home, info]

(Note: See invalidation for more definitions.)

Quick definitions from WordNet (invalidator) ▸ noun:  an official who can invalidate or nullify ("My bank check was voided and I wanted to know who the invalidator was") ▸ Also see invalidation ▸ Words similar to invalidator ▸ Usage examples for invalidator ▸ Popular adjectives describing invalidator ▸ Words that often appear near invalidator ▸ Rhymes of invalidator ▸ Invented words related to invalidator