- As a numeral, M stands for one thousand, both in English and Latin.
- (n.) A brand or stigma, having the shape of an M, formerly impressed on one convicted of manslaughter and admitted to the benefit of clergy.
- M, the thirteenth letter of the English alphabet, is a vocal consonant, and from the manner of its formation, is called the labio-nasal consonant. See Guide to Pronunciation, // 178-180, 242.
- (n.) A quadrat, the face or top of which is a perfect square; also, the size of such a square in any given size of type, used as the unit of measurement for that type: 500 m's of pica would be a piece of matter whose length and breadth in pica m's multiplied together produce that number.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). m. Retrieved September 21, 2026, from http://smartdefine.org/m/definitions/2029462 |
| Chicago | Webster's. 2011. "m" http://smartdefine.org/m/definitions/2029462 (accessed September 21, 2026). |
| Harvard | Webster's 2011, m, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/m/definitions/2029462>. |
| MLA | Webster's. "m" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/m/definitions/2029462> |