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M Definition


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Other M Definition

[n] concentration measured by the number of moles of solute per liter of solvent
[n] the 13th letter of the Roman alphabet
[n] the basic unit of length adopted under the System International d'Unites (approximately 1.094 yards)
[n] the cardinal number that is the product of 10 and 100
[adj] denoting a quantity consisting of 1,000 items or units

Misc. Definitions

\M\ ([e^]m).
1. 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, [sect][sect] 178-180, 24
2. Note: The letter M came into English from the Greek, through the Latin, the form of the Greek letter being further derived from the Ph[oe]nician, and ultimately, it is believed, from the Egyptian. Etymologically M is related to n, in lime, linden; emmet, ant; also to b. M is readily followed by b and p. the position of the lips in the formation of both letters being the same. The relation of b and m is the same as that of d and t to n. and that of g and k to ng.
2. As a numeral, M stands for one thousand, both in English and Latin.
\M\, n.
1. (Print.) 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. [Written also {em}.]
2. (law) 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 roof} (Arch.), a kind of roof formed by the junction of two common roofs with a valley between them, so that the section resembles the letter M.