We found 37 dictionaries that define the word validate:

General (24 matching dictionaries)

1. validate: Longman Dictionary of Contemporary English
2. validate: Merriam-Webster
3. validate: Oxford Learner's Dictionaries
4. validate: American Heritage Dictionary of the English Language
5. validate: Collins English Dictionary
6. validate: Vocabulary.com
7. Validate, validate: Wordnik
8. validate: Cambridge Advanced Learner's Dictionary
9. validate: Wiktionary
10. validate: Webster's New World College Dictionary, 4th Ed.
11. validate: The Wordsmyth English Dictionary-Thesaurus
12. validate: Infoplease Dictionary
13. validate: Dictionary.com
14. validate: Cambridge Essential American English Dictionary
15. Validate: Wikipedia, the Free Encyclopedia
16. Validate: Online Plain Text English Dictionary
17. validate: Webster's Revised Unabridged, 1913 Edition
18. validate: Rhymezone
19. validate: AllWords.com Multi-Lingual Dictionary
20. validate: FreeDictionary.org
21. validate: Mnemonic Dictionary
22. validate: TheFreeDictionary.com

Business (6 matching dictionaries)

23. validate: Merriam-Webster Legal Dictionary
24. VALIDATE: Accounting Glossary
25. Glossary of Legal Terms (No longer online)
26. validate: Legal dictionary
27. Accounting, Business Studies and Economics Dictionary (No longer online)
28. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

29. validate: Encyclopedia

Medicine (3 matching dictionaries)

30. Validate: MedFriendly Glossary
31. online medical dictionary (No longer online)
32. validate: Medical dictionary

Miscellaneous (1 matching dictionary)

33. VALIDATE: Acronym Finder

Slang (1 matching dictionary)

34. validate: Urban Dictionary

Tech (1 matching dictionary)

35. DOD Dictionary of Military Terms (No longer online)

(Note: See validated as well.)

Definitions from Wiktionary ( ) ▸ verb:  (transitive) To render valid. ▸ verb:  (transitive) To check or prove the validity of; verify. ▸ verb:  (ergative) To have its validity successfully proven. Similar: corroborate, formalize, validify, valudate, authenticate, justify, verify, revalidate, legitimize, prove, more... Opposite: invalidate, nullify, void Types: authenticate, certify, confirm, corroborate, endorse, ratify, substantiate, more... Phrases: to validate, validate it, not validate, validate before use, validate positively, more... Adjectives: void, public, self, click, new Colors:     blue,     green,     gold,     silver,     emerald, more... ▸ Words similar to validate ▸ Usage examples for validate ▸ Idioms related to validate ▸ Wikipedia articles (New!) ▸ Words that often appear near validate ▸ Rhymes of validate ▸ Invented words related to validate