M

M is also the name of M-Source

Meanings for M

• In astronomy, M is an abbreviation for "Messier" in designations for the Messier Deepsky Objects.
• In biochemistry, M is the symbol for methionine.
• In calendars, M is often an abbreviation for Monday or for one of the months "March" or "May".
• In chemistry:
• M is the symbol for molarity (M) of solutions.
• m is the symbol for molality (m) of solutions.
• In the CMYK color model, M stands for the colour magenta.
• In comic books, M is the name of a member of "Generation X", a team of younger mutants affiliated with and coached by some of the former "X-Men".
• In computing:
• M, when used as a binary prefix, means 2²⁰ = 1,048,576 (cf. M as a Metric prefix below, and the prefix mebi: Mi).
• M is another name for the computer programming language MUMPS.
• In common references to currency, M or m denotes million or millions, such as $25M (twenty-five million dollars).
• In traditional accounting practice, M designates thousand or thousands (from the Latin mille), and MM is used for million. Hence such traditional abbreviations as CPM for cost per thousand items of a retail good, or MCF for thousand cubic feet of (e.g.) natural gas.
• In French, and some English works by French authors, "M." is an abbreviation for Monsieur.
• In film:
• M is the codename of the head of MI6 in the James Bond books and films; see M (James Bond).
• M is the name of a film from 1931 directed by Fritz Lang about a serial killer who preys on children; see M (1931 film).
• M is the name of a lesser-known film from 1951; see M (1951 film).
• In grammar, M is often the abbreviation for the male grammatical gender.
• In higher criticism, M is an abbreviation for "M Gospel"
• In information systems, M is often used as the abbreviation for the male sex in personal data records.
• In international licence plate codes, M stands for Malta.
• In mathematics:
• m is used to denote slope in slope-intercept form. An M-set is the opposite of a set of uniqueness.
• Script capital M (Unicode 0x2133 ?) denotes a matrix.
• In the SI system:
• M, mega, is an SI prefix denoting 10⁶ = 1,000,000 (one million) (cf. M in computing above)
• m, milli, an SI prefix meaning 1/1000.
• m denotes metre (or meter), the SI base unit for length.
• Script capital M (Unicode 0x2133 ?) denotes the old German currency mark.
• In music:
• M is the assumed name of the artist Robin Scott, who performed the 1979 #1 hit song "Pop Muzik".
• -M- is the artist name of the French singer Matthieu Chédid.
• "M" is the pseudonym for a Jazz vocalist hired by Yoko Kanno (see M (singer))
• A reference to rapper Eminem
• In physics:
• M-theory is a proposed solution for problems in superstring theories.
• Script capital M (Unicode 0x2133 ?) denotes a torque.
• As the first letter of a postal code:
• In Canada, M stands for the City of Toronto.
• In the United Kingdom, M stands for Manchester.
• In radiocommunication, M is one of the ITU prefixes allocated to the United Kingdom.
• In Roman naming convention, M is the abbreviation for the praenomen Marcus, and M' stands for Manius.
• In Roman numerals, M denotes one thousand, from mille in Latin (there are also separate Unicode characters for this number, 0x216F "?" and 0x217F "?").
• In video games:
• M is the ESRB rating symbol for Mature.
• M is the abbreviation for Mario, a Nintendo character.
• The name of a glitch Pokémon, called 'M. (The real name consists of a glitchy symbol before and after the 'M.)
• M is an abbreviation for the Russian design bureau Myasishchev
• In economics, M is usually used to represent imports.
• In photography, most SLR cameras use M to signify manual mode, where the user sets both aperture and shutter speed.