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⇱ m - WordReference.com Dictionary of English

m

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations'M', 'm': /ˈɛm/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA'M', 'm': /ɛm/ ,USA pronunciation: respelling'M', 'm': (em)


Collins Concise English Dictionary © HarperCollins Publishers::
m, M /ɛm/ n ( pl m's, M's, Ms)
  1. the 13th letter and tenth consonant of the modern English alphabet
  2. a speech sound represented by this letter, usually a bilabial nasal, as in mat
m symbol for
  1. metre(s)
  2. mile(s)
  3. milli-
  4. minute(s)
WordReference Random House Learner's Dictionary of American English © 2026
M, m /ɛm/USA pronunciation   n. [countable], pl. Ms or M's, ms or m's. 
  1. Linguisticsthe 13th letter of the English alphabet, a consonant.

M,  an abbreviation of:
  1. Physicsmach.
  2. Biochemistrymarried.
  3. medium.
  4. mega-.

M,  Symbol.
  1. the 13th in order or in a series.
  2. the Roman numeral for 1000.

m,  an abbreviation of:
  1. Physicsmass.
  2. medium.
  3. Weights and Measuresmeter.
  4. middle.

M.,  an abbreviation of:
  1. majesty.
  2. Music and Dancemeasure.
  3. medicine.
  4. medium.
  5. meridian.
  6. Monday.
  7. Foreign Termspl. MM. messieurs.

m.,  an abbreviation of:
  1. male.
  2. married.
  3. masculine.
  4. Physicsmass.
  5. medium.
  6. Latin merīdiēs noon.
  7. Weights and Measuresmeter.
  8. middle.
  9. Weights and Measuresmile.
  10. minute.
  11. morning.

WordReference Random House Learner's Dictionary of American English © 2026
ˈRo•man ˈnu•mer•al,  n. [countable]
  1. any of the numerals in the ancient Roman system of notation, still used occasionally. The basic symbols are I (=1), V (=5), X (=10), L (=50), C (=100), D (=500), and M (=1000).

WordReference Random House Unabridged Dictionary of American English © 2026
M, m  (em),USA pronunciation n., pl. M's or Ms, m's or ms. 
  1. Linguisticsthe thirteenth letter of the English alphabet, a consonant.
  2. Linguisticsany spoken sound represented by the letter M or m, as in my, summer, or him.
  3. something having the shape of an M.
  4. a written or printed representation of the letter M or m.
  5. Printinga device, as a printer's type, for reproducing the letter M or m.
  6. Printingem.

M, 
    1. Physicsmach.
    2. Music and Dancemajor.
    3. Electricitymale.
    4. Biochemistrymarried.
    5. Medieval.
    6. medium.
    7. mega-.
    8. Middle.
    9. modal auxiliary.
    10. modifier.
    11. Economics, Businessmonetary aggregate: issued periodically by the Federal Reserve Board as various measures of money supply (M-1, M-1A, M-2, etc.). Cf. L. 
    12. British Termsmotorway (used with a road number to designate a major highway):the M1.

M, [Symbol.]
  1. the thirteenth in order or in a series, or, when I is omitted, the twelfth.
  2. (sometimes l.c.) the Roman numeral for 1000. Cf. Roman numerals. 
  3. [Elect.]magnetization.
  4. Biochemistrymethionine.

m, 
    1. Physicsmass.
    2. Business[Finance.](of bonds) matured.
    3. medieval.
    4. medium.
    5. Weights and Measuresmeter;
      meters.
    6. middle.
    7. [Music.]minor.

m, 
  1. [Symbol, Elect.]magnetic pole strength.

M-, 
  1. Military[U.S. Mil.](used to designate the production model of military equipment, as the M-1 rifle.)

m-, 
  1. meta-.

M'-, 
  1. var. of Mac-. 

M., 
    1. Majesty.
    2. Place NamesManitoba.
    3. markka;
      markkaa.
    4. Marquis.
    5. Music and Dancemeasure.
    6. medicine.
    7. medium.
    8. meridian.
    9. noon.
    10. Monday.
    11. Foreign Termspl MM. Monsieur.
    12. mountain.

m., 
    1. male.
    2. Currency(in Germany) mark;
      marks.
    3. married.
    4. masculine.
    5. Physicsmass.
    6. medium.
    7. noon.
    8. Weights and Measuresmeter.
    9. middle.
    10. Weights and Measuresmile.
    11. minute.
    12. Drugs(in prescriptions) mix.
    13. modification of.
    14. modulus.
    15. Chemistrymolar.
    16. month.
    17. moon.
    18. morning.
    19. mouth.

WordReference Random House Unabridged Dictionary of American English © 2026
Ro′man nu′merals, 
  1. the numerals in the ancient Roman system of notation, still used for certain limited purposes, as in some pagination, dates on buildings, etc. The common basic symbols are I (=1), V (=5), X (=10), L (=50), C (=100), D (=500), and M (=1000). The Roman numerals for one to nine are: I, II, III, IV, V, VI, VII, VIII, IX. A bar over a letter multiplies it by 1000;
    thus, X̄ equals 10,000. Integers are written according to these two rules: If a letter is immediately followed by one of equal or lesser value, the two values are added;
    thus, XX equals 20, XV equals 15, VI equals 6. If a letter is immediately followed by one of greater value, the first is subtracted from the second;
    thus, IV equals 4, XL equals 40, CM equals 900. Examples: XLVII(=47), CXVI(=116), MCXX(=1120), MCMXIV(=1914). Roman numerals may be written in lowercase letters, though they appear more commonly in capitals.
  • 1725–35

WordReference Random House Unabridged Dictionary of American English © 2026
m-, +
  1. Computing(referring esp. to the use of wireless electronic devices) mobile:m-commerce; m-business.

Collins Concise English Dictionary © HarperCollins Publishers::
M symbol for
  1. mach
  2. medium (size)
  3. mega-
  4. mark(s)
  5. million
  6. (in Britain) motorway
  7. (Roman numeral) 1000
    See Roman numerals
Collins Concise English Dictionary © HarperCollins Publishers::
M'- prefix
  1. a variant of Mac-
Collins Concise English Dictionary © HarperCollins Publishers::
M. abbreviation for
  1. Majesty
  2. (in titles) Member
  3. million
  4. Also: M ( pl MM., MM) French: Monsieur
Etymology: (sense 4) French equivalent of Mr
Collins Concise English Dictionary © HarperCollins Publishers::
Mac-, Mc-, M'- prefix
  1. (in surnames of Scottish or Irish Gaelic origin) son of: MacDonald, MacNeice
Etymology: from Goidelic mac son of; compare Welsh mab, Cornish mab
Collins Concise English Dictionary © HarperCollins Publishers::
m- prefix
  1. short for meta-
m- prefix
  1. indicating the use of mobile-communications technology: m-banking
'm' also found in these entries (note: many are not synonyms or translations):

🗣️Forum discussions with the word(s) "m" in the title:

" I don’t know who(m) to talk with"
< I take back/ I’m taking back > my wish
- I'm going to let my flat out.
- I'm really cut about it.
- I'm self-employed, I do a mixture of everything that I can
- I'm sorry. (empathy) - It's not your fault. (?)
- Oh, I'm doing OK. I just went to the mall. - Me too.
- OK, I'm starting to understand it.
-I ‘m going to start my further studies in October.
-I’m going out tonight. -Who?
—Are you as friendly as your sister?—No, I'm not. I'm friendlier
...he told me, 'Azreen, I'm in so much pain'.
...I knew she would annoy me while I'm doing my homework.
''I'm a hot guy who men thinks I'm not but girls think I am.''
''I'm fine'' as an answer to "what's up?''
''I'm flattered''
''I'm glad...'' vs ''It's a good thing...''
''I'm joking'' Vs 'I'm not being serious''
''I'm not being serious'' Vs ''I'm not serious''
''I'm not gonna be giving them''
''I'm speechless.''and ''I'm at a loss for words''
'11 p.m' AND 'it stroke (struck) 11 P.M'
'a finite M' or 'finite M'?
'All events are at 9 p.m start' vs 'All events start at 9 p.m'
'as far as I'm concerned' at the end of a sentence
'At 9 A.M. I was working'
'How are you?' ''I'm not fine.''
'I'll be darned' for 'I'm surprised'
I'm already missing you
'I'm gonna be dating leather-wearing alcoholics and complaining about them to you'.
more...

Look up "m" at Merriam-Webster
Look up "m" at dictionary.com
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