We found 31 dictionaries that define the word M1:

General (12 matching dictionaries)

1. m1: Longman Dictionary of Contemporary English
2. M1: Collins English Dictionary
3. M1: Vocabulary.com
4. M1, m1, m1: Wordnik
5. M1: Wiktionary
6. M1, m1: Dictionary.com
7. M1 (Australia), M1 (Copenhagen), M1 (Copenhagen Metro), M1 (Istanbul), M1 (Istanbul Metro), M1 (Johannesburg), M1 (New York City bus), M1 (Queensland), M1 (TV channel), M1 (Warsaw), M1 (disambiguation), M1 (economics), M1 (missile), M1 (mobile communications), M1 (money supply measure), M1 (railcar), M1: Wikipedia, the Free Encyclopedia
8. M1: Rhymezone
9. M1: Stammtisch Beau Fleuve Acronyms
10. m1: FreeDictionary.org
11. m1: Mnemonic Dictionary
12. M1: TheFreeDictionary.com

Business (13 matching dictionaries)

13. MoneyGlossary.com (No longer online)
14. M1: Webster's New World Finance & Investment Dictionary
15. INVESTORWORDS (No longer online)
16. M1: Accounting Glossary
17. M1: Bloomberg Financial Glossary
18. M1: Glossary of research economics
19. M1: FACS Journalist's Guide to Economic Terms
20. M1: Moneyterms
21. M1: Deardorff's Glossary of International Economics
22. M1: Finance-Glossary.com
23. M1: Investopedia
24. M1: Financial dictionary
25. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

26. M1: Encyclopedia

Medicine (1 matching dictionary)

27. Hepatitis C Information Central (No longer online)

Miscellaneous (1 matching dictionary)

28. M1: Acronym Finder

Science (2 matching dictionaries)

29. M1: Material Safety Data Sheets HyperGlossary
30. M1: Cytokines & Cells Online Pathfinder Encyclopaedia

Slang (1 matching dictionary)

31. M1: Urban Dictionary

Definitions from WordNet (M1) ▸ noun:  a measure of the money supply; includes currency in circulation plus demand deposits or checking account balances Similar: rifle, a1, A, A2, A3, alt, AMI, AML, ao, B, more... Opposite: m2, broad money, money supply Phrases: Aflatoxin M1, m1 monetary aggregate, m1 rifle, M1 Abrams, Apple M1, more... ▸ Words similar to M1 ▸ Usage examples for M1 ▸ Idioms related to M1 ▸ Wikipedia articles (New!) ▸ Popular adjectives describing M1 ▸ Words that often appear near M1 ▸ Rhymes of M1 ▸ Invented words related to M1