Real Dictionary

-'m
-'m is the usual spoken form of 'am', used after 'I' in 'I'm'.

-'m in American English
am

'm in British English
contraction of: am

M
m is a written abbreviation for metres or , metre.
variable noun: M is the thirteenth letter of the English alphabet.

M in American English
noun: the thirteenth letter of the English alphabet, a consonant

M in American English 1
a Roman numeral for 1,000: with a superior bar (), 1,000,000
the thirteenth letter of the English alphabet: from the Greek mu, derived ultimately from the Phoenician
abbreviation: mach
abbreviation: mass

M in American English 2
Maccabees
male
symbol: magnetic pole strength
symbol: the thirteenth in order or in a series, or, when I is omitted, the twelfth

m in British English
noun: the 13th letter and tenth consonant of the modern English alphabet
symbol for: mach
symbol for: metre(s)

m- in American English
meta- (sense 6) meta- (sense 6d)
prefix
prefix: (used to designate the production model of military equipment, as the M-1 rifle)

m- in British English
prefix: indicating the use of mobile-communications technology

m. in American English
male
abbreviation: Majesty

m. in British English
abbreviation for: maiden (over)
abbreviation for: Majesty

M'- in American English
Mac-
prefix

M'- in British English
prefix

M⊙ in British English
prefix
symbol for: solar mass