M, or m, is the thirteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of several western European languages and others worldwide.

Economics. monetary aggregate: issued periodically by the Federal Reserve Board as various measures of money supply (M-1, M-1A, M-2, etc.).

[ S or U ] abbreviation for medium: used to refer to someone or something, usually an item of clothing, that is of medium or average size: I like the sweater but I can't find an M. in M The shirts come in S, …

History, etymology, and pronunciation of m, the thirteenth letter in the alphabet. It corresponds to the Semitic mem and to the Greek mu. The Semitic form may derive from an earlier sign representing …

1. The 13th letter of the modern English alphabet. 2. Any of the speech sounds represented by the letter m. 3. The 13th in a series. 4. Something shaped like the letter M.

-'m is the usual spoken form of 'am', used after 'I' in 'I'm'. Collins COBUILD Advanced Learner’s Dictionary. Copyright © HarperCollins Publishers

M definition: The 13th letter of the modern English alphabet.

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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.

Definition of M noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.