The Letter M (mmmm)

1) The Roman numeral M represents the number 1000, though it was not used in Roman times. There is, however, scant evidence that the letter was later introduced in the early centuries A.D. by the Romans. 2) Unit prefix M (mega), meaning one million times, and m (milli) meaning one-thousandth. 3) m is the standard abbreviation for metre (or meter) in the International System of Units (SI). However, m is also used as an abbreviation for mile. 4) M is used as the unit abbreviation for molar concentration. 5) With money amounts, m means one million: $5m is five million dollars. 6) M often represents male or masculine, especially in conjunction with F for female or feminine. 7) M (James Bond) is a fictional character in Ian Fleming's James Bond book and film series 8) In typography, an em dash is a punctuation symbol whose width is equal to that of a capital letter M.