We found 50 dictionaries that define the word e-mail:

General (21 matching dictionaries)

1. e-mail: Merriam-Webster
2. e-mail: Oxford Learner's Dictionaries
3. e-mail: American Heritage Dictionary of the English Language
4. e-mail: Collins English Dictionary
5. e-mail: Vocabulary.com
6. E-Mail, E-mail, e-mail, e-Mail: Wordnik
7. e-mail: Cambridge Advanced Learner's Dictionary
8. e-mail: Wiktionary
9. e-mail: Webster's New World College Dictionary, 4th Ed.
10. e-mail: Dictionary.com
11. e-mail: Online Etymology Dictionary
12. e-mail: Cambridge Essential American English Dictionary
13. E-Mail, E-mail: Wikipedia, the Free Encyclopedia
14. e-mail: Rhymezone
15. e-mail, e-mail: AllWords.com Multi-Lingual Dictionary
16. E-Mail: Stammtisch Beau Fleuve Acronyms
17. e-mail: FreeDictionary.org
18. e-mail: Mnemonic Dictionary
19. e-mail: TheFreeDictionary.com
20. e-mail: Wikimedia Commons US English Pronunciations

Art (4 matching dictionaries)

21. e-mail: ArtLex Lexicon of Visual Art Terminology
22. E-Mail: Glossary of Binary Graphics
23. Glossary of Stamp Collecting Terms (No longer online)
24. ODLIS: Online Dictionary of Library and Information Science (No longer online)

Business (1 matching dictionary)

25. E-Mail: Legal dictionary

Computing (15 matching dictionaries)

26. e-mail: Free On-line Dictionary of Computing
27. e-mail: CCI Computer
28. BABEL: Computer Oriented Abbreviations and Acronyms (No longer online)
29. E-Mail: Computer Telephony & Electronics Dictionary and Glossary
30. Glossary of Internet Terms (No longer online)
31. E-mail: Tech Terms Computer Dictionary
32. Internet Terms (No longer online)
33. Internet Terms (No longer online)
34. E-mail: Linktionary Networking Glossary
35. Karbo's Dictionary (No longer online)
36. Webopedia (No longer online)
37. Data Formats and Their Sugggested File Extensions (No longer online)
38. I T Glossary (No longer online)
39. e-mail: Encyclopedia
40. E-MAIL: SELF PACED INTERNET GUIDE

Medicine (2 matching dictionaries)

41. E-Mail: Medical Dictionary Online
42. e-mail: Medical dictionary

Miscellaneous (2 matching dictionaries)

43. E-MAIL: Acronym Finder
44. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

45. E-mail, the e-mail: Urban Dictionary

Sports (1 matching dictionary)

46. E-Mail: Poker Terms

Tech (3 matching dictionaries)

47. e-mail: Webster's New World Telecom Dictionary
48. DOD Dictionary of Military Terms: Joint Acronyms and Abbreviations (No longer online)
49. E-mail: Drug Reference Encyclopedia

(Note: See e-mailing as well.)

Definitions from WordNet ( ) ▸ noun:  (computer science) a system of world-wide electronic communication in which a computer user can compose a message at one terminal that is generated at the recipient's terminal when he logs in ▸ verb:  communicate electronically on the computer ("She e-mailed me the good news") Similar: email, netmail, electronic mail, Gmail, e-commerce, user name, eBook, etext, Wi-Fi, mbox, more... Opposite: snail mail, postal mail, physical mail Types: Gmail, Yahoo, Outlook, AOL, Zoho, ProtonMail, Tutanota, Mailfence, more... Phrases: e-mail address, junk e-mail, e-mail bomb, e-mail client, e-mail account, more... Colors:     blue,     white,     gray,     black,     red, more... ▸ Word origin ▸ Words similar to e-mail ▸ Usage examples for e-mail ▸ Idioms related to e-mail ▸ Wikipedia articles (New!) ▸ Popular adjectives describing e-mail ▸ Words that often appear near e-mail ▸ Rhymes of e-mail ▸ Invented words related to e-mail