We found 23 dictionaries that define the word att:

General (12 matching dictionaries)

1. att: Merriam-Webster
2. att: American Heritage Dictionary of the English Language
3. att, att: Collins English Dictionary
4. Att, att, att: Wordnik
5. att: Wiktionary
6. att: Webster's New World College Dictionary, 4th Ed.
7. att: Infoplease Dictionary
8. att, att: Dictionary.com
9. ATT, Att: Wikipedia, the Free Encyclopedia
10. att: Stammtisch Beau Fleuve Acronyms
11. att: TheFreeDictionary.com
12. att: Merriam-Webster

Business (2 matching dictionaries)

13. att: Merriam-Webster Legal Dictionary
14. Glossary of Legal Terms (No longer online)

Computing (1 matching dictionary)

15. ATT: Free On-line Dictionary of Computing

Medicine (1 matching dictionary)

16. ATT: Medical dictionary

Miscellaneous (3 matching dictionaries)

17. ATT: Acronym Finder
18. ATT: Three Letter Words with definitions
19. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

20. ATT, ATT: Urban Dictionary

Tech (3 matching dictionaries)

21. AT&T: Webster's New World Telecom Dictionary
22. Locksmith Dictionary (No longer online)
23. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)

Definitions from Wiktionary (att) ▸ noun:  A subdivision of currency, equal to one hundredth of a Lao kip. Similar: sente, paisa, leone, satang, sent, chetrum, toea, qindarkë, lwei, thebe, more... Opposite: repel, reject, oppose, disagree, dissent Types: achment, more... Phrases: att site, att gen, att worldnet, ja att, heart att, more... Adjectives: cicero, cic, secure, positive, date, object, infinitive, swedish, fine, commercial, compare Colors:     blue,     orange,     white,     black,     red, more... ▸ Words similar to att ▸ Usage examples for att ▸ Idioms related to att ▸ Wikipedia articles (New!) ▸ Popular adjectives describing att ▸ Words that often appear near att ▸ Rhymes of att ▸ Invented words related to att