M (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, §§ 178-180, 242.
The letter M came into English from the Greek, through the Latin, the
form of the Greek letter being further derived from the Phœnician, 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.