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We found 34 dictionaries with English definitions that include the word what:
Click on the first link on a line below to go directly to a page where "what" is defined.

General (29 matching dictionaries)

1. what: Merriam-Webster.com [home, info]
2. what: Oxford Learner's Dictionaries [home, info]
3. what: American Heritage Dictionary of the English Language [home, info]
4. what: Collins English Dictionary [home, info]
5. what: Vocabulary.com [home, info]
6. what: Macmillan Dictionary [home, info]
7. WHat, What, What, What, What, What, what, what, what, what, what, what, the-what: Wordnik [home, info]
8. what: Cambridge Advanced Learner's Dictionary [home, info]
9. what: Wiktionary [home, info]
10. what: Webster's New World College Dictionary, 4th Ed. [home, info]
11. what: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. what: Infoplease Dictionary [home, info]
13. what: Dictionary.com [home, info]
14. what: Online Etymology Dictionary [home, info]
15. What, what: UltraLingua English Dictionary [home, info]
16. what: Cambridge Dictionary of American English [home, info]
17. what: Cambridge International Dictionary of Idioms [home, info]
18. The What, WHAT (AM), What (song), What: Wikipedia, the Free Encyclopedia [home, info]
19. What: Online Plain Text English Dictionary [home, info]
20. what: Webster's Revised Unabridged, 1913 Edition [home, info]
21. what: AllWords.com Multi-Lingual Dictionary [home, info]
22. what: Webster's 1828 Dictionary [home, info]
23. what: Free Dictionary [home, info]
24. what: LookWAYup Translating Dictionary/Thesaurus [home, info]
25. what: Dictionary/thesaurus [home, info]
26. what: Wikimedia Commons US English Pronunciations [home, info]
27. What: Wordnik [home, info]

Art (1 matching dictionary)

28. what: ANIME AND MANGA GLOSSARY [home, info]

Medicine (1 matching dictionary)

29. WHAT: Vocabulary of Loss: Suicide, Grief, and Ethics [home, info]

Miscellaneous (2 matching dictionaries)

30. WHAT: Acronym Finder [home, info]
31. WHAT: AbbreviationZ [home, info]

Slang (1 matching dictionary)

32. WHAT, wha't, what: Urban Dictionary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from Wiktionary (what) ▸ adverb:  (interrogative) In what way; to what extent. ▸ adverb:  Used before a prepositional phrase to emphasise that something is taken into consideration as a cause or reason; usually used in combination with 'with' (see what with), and much less commonly with other prepositions. ▸ noun:  (obsolete, uncountable) Something; thing; stuff. ▸ noun:  (countable) The identity of a thing, as an answer to a question of what. ▸ noun:  (countable) Something that is addressed by what, as opposed to a person, addressed by who. ▸ Word origin ▸ Words similar to what ▸ Usage examples for what ▸ Idioms related to what (New!) ▸ Popular adjectives describing what ▸ Words that often appear near what ▸ Rhymes of what ▸ Invented words related to what