| M1 |
abbreviation of "medium," middle or intermediate in size or degree. |
| M2 |
in Roman numeral notation, 1,000. |
| M3 |
abbreviation of "male." |
| M. |
abbreviation of "Monsieur," the French title of respect and term of address for a man, corresponding to "Mister" or "Sir". |
| M- |
used with a number to denote equipment produced for U.S. military use, such as the M-16 rifle. |
| m |
the thirteenth letter of the English alphabet. |
| m.1 |
abbreviation of "meter," or "meters." |
| m.2 |
abbreviation of "mass," in physics, the quality of a body that determines its resistance to acceleration. |
| M-1 |
the basic .30-caliber U.S. military rifle used in World War II and the Korean War, which is semiautomatic and uses a clip. |
| M-16 |
the basic U.S. military rifle used in the Vietnam War, which is fully automatic and uses small-caliber, high-velocity ammunition. |
| MA |
abbreviation of "Massachusetts." |
| M.A. |
a degree earned in particular fields after one or two years of additional study following college. "M.A." is an abbreviation of "Master of Arts." |
| ma |
(informal) mother. |
| ma'am |
(informal; often capitalized) madam. |
| Mac |
brandname for "Macintosh" computer since 1998. |
| macabre |
of, pertaining to, depicting, or evoking death or the horrors of death; gruesome; ghastly. |
| macadam |
a surface, such as a road, paved with layers of compressed, broken stone, usu. mixed with tar or asphalt. [2 definitions] |
| macadamia |
a round, hard-shelled, edible nut, cultivated in Hawaii; macadamia nut. [2 definitions] |
| macadamize |
to build, pave, or repair (a road) with compacted layers of crushed stone. |
| macaque |
any of a family of monkeys of the East Indies, Asia, and Africa that have cheek pouches and tails that are not prehensile, such as the rhesus monkey. |
| macaroni |
dried noodles made from flour and water, often shaped into curved, hollow tubes. |