m

I. noun (plural m's or ms) Usage: often capitalized, often attributive Date: before 12th century 1. a. the 13th letter of the English alphabet b. a graphic representation of this letter c. a speech counterpart of orthographic m 2. one thousand — see number table 3. a graphic device for reproducing the letter m 4. one designated m especially as the 13th in order or class 5. something shaped like the letter M 6. a. em 2 b. pica 2 II. abbreviation 1. male 2. manual 3. married 4. martyr 5. masculine 6. mass 7. measure 8. meridian 9. [Latin meridies] noon 10. meter 11. middle 12. mile 13. [Latin mille] thousand 14. milli- 15. minute 16. molal; molality 17. mole 18. month 19. moon 20. morning 21. muscle