M

M, 13th letter of the English alphabet, corresponds with the 13th Semitic letter mem, represented by a zigzag, wavelike form that scholars relate to the Hebrew mayim (water). M is mu in the Greek alphabet and the 12th letter of the Roman alphabet. Its present form comes directly from classical Latin. In Roman numerals M represents 1,000. In the French language M. is the abbreviation for monsieur (Mr.).