Ｍ
Meanings
the letter M; m
Refers to the Latin letter itself, used in abbreviations, symbols, and as a character.
The letter M in the alphabet is read as 'emu'.
Abbreviation for metre/meter; usually read as メートル in Japanese.
This cable is 3 metres long.
Abbreviation for masochist/masochistic, often used in contexts like SM (sadomasochism).
See also: Ｓ
He is more of an M, if anything.
Used as a symbol or abbreviation for male gender, e.g., on forms or in biological contexts.
Please write M in the gender field.
Abbreviation for medium, as in clothing size or other sizing contexts.
The size of this T-shirt is M.
one thousand (Roman numeral)
Represents the number 1000 in Roman numerals.
The Roman numeral M represents 1000.
Abbreviation for magnitude, especially in astronomy or seismology.
The magnitude of that star is 5.
Symbol for mass in physics.
In physics formulas, M represents mass.
Abbreviation for Mach number, used in aerodynamics.
The aircraft is flying at Mach 2.
milli-; m
Prefix meaning one-thousandth; the symbol m is more common, but M is sometimes used in specific contexts.
mm is an abbreviation for millimetre; the first m stands for milli-.
Prefix meaning one million; commonly used in computing and electronics (e.g., MB for megabyte).
The size of this file is 5 MB.
Abbreviation for the color magenta, used in printing (CMYK).
In printing, M stands for magenta.
Slang and archaic term for money, possibly from the first letter of 'money' or from old criminal jargon.
In old slang, M referred to money.