M

The thirteenth letter of the Latin alphabet, M, represents the bilabial nasal consonant sound [m] in Classical languages as well as the modern languages. It derives its shape from the Greek Μ or μ. Semitic Mem originally pictured water, in all probability.

A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z

In context, M is also:

• The Roman numeral for 1000 (mille in Latin)
• Million, or millions, when used after certain currency expresions, as $25M ("twenty-five million dollars)
• An abbrevation for "Messier" in designations for the Messier Deepsky Objects
• The name of a 1931 movie directed by Fritz Lang about a serial killer who preys on children. There is also a 1951 movie[?]
• The codename[?] of the head of MI6 in the James Bond books and films
• As m, an SI unit for length, see metre.