We found 26 dictionaries that define the word M3:

General (10 matching dictionaries)

1. M3: Collins English Dictionary
2. M3: Vocabulary.com
3. m3: Wordnik
4. M3: Wiktionary
5. M3, m3: Dictionary.com
6. M3 (Album), M3 (Canadian TV channel), M3 (Cape Town), M3 (Copenhagen), M3 (Hungarian TV channel), M3 (Istanbul Metro), M3 (New York City bus), M3 (album), M3 (economics), M3 (email client), M3 (railcar), M3: Wikipedia, the Free Encyclopedia
7. M3: Rhymezone
8. m3: FreeDictionary.org
9. m3: Mnemonic Dictionary
10. M3: TheFreeDictionary.com

Business (10 matching dictionaries)

11. MoneyGlossary.com (No longer online)
12. M3: Webster's New World Finance & Investment Dictionary
13. INVESTORWORDS (No longer online)
14. M3: Accounting Glossary
15. M3: Bloomberg Financial Glossary
16. M3: Moneyterms
17. M3: Finance-Glossary.com
18. M3: Investopedia
19. M3: Financial dictionary
20. BusinessDictionary.com (No longer online)

Computing (2 matching dictionaries)

21. M3: Free On-line Dictionary of Computing
22. M3: Encyclopedia

Miscellaneous (2 matching dictionaries)

23. M3: Acronym Finder
24. AbbreviationZ (No longer online)

Science (1 matching dictionary)

25. M3: Cytokines & Cells Online Pathfinder Encyclopaedia

Slang (1 matching dictionary)

26. Totally Unofficial Rap (No longer online)

Definitions from WordNet (M3) ▸ noun:  a measure of the money supply; M2 plus deposits at institutions that are not banks (such as savings and loan associations) Similar: Canes Venatici, 41, 1, 51, 76, 90, A, AC, AML, AP, more... Types: cubic meter, meter, more... Phrases: BMW M3, M3 submachine gun, M3 Stuart, M3 Lee, M3 Bradley, more... ▸ Words similar to M3 ▸ Usage examples for M3 ▸ Idioms related to M3 ▸ Wikipedia articles (New!) ▸ Popular adjectives describing M3 ▸ Words that often appear near M3 ▸ Rhymes of M3 ▸ Invented words related to M3