We found 35 dictionaries that define the word validate:

General (23 matching dictionaries)

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

Business (5 matching dictionaries)

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

Computing (1 matching dictionary)

27. validate: Encyclopedia

Medicine (3 matching dictionaries)

28. Validate: MedFriendly Glossary
29. online medical dictionary (No longer online)
30. validate: Medical dictionary

Miscellaneous (1 matching dictionary)

31. VALIDATE: Acronym Finder

Slang (1 matching dictionary)

32. validate: Urban Dictionary

Tech (1 matching dictionary)

33. 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