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Topic: LETTERS AND PUNCTUATION

M

 noun
     
M , m plural M's, m's
1SLA [uncountable and countable] the 13th letter of the English alphabet
2HMN [countable] the number 1000 in the system of roman numerals
3

M6, M25 etc

the name of a motorway in Britain
Definition of M from the Longman Dictionary of Contemporary English within
the topic LETTERS AND PUNCTUATION
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