| mpg |
abbreviation of "miles per gallon." |
| mph |
abbreviation of "miles per hour." |
| Mr. |
abbreviation of "Mister," a conventional title of courtesy, usu. abbreviated and placed before a man's last name or title of office. [2 definitions] |
| MRI |
abbreviation of "magnetic resonance imaging," a non-invasive medical imaging technology using radio waves and powerful magnetic fields to make the interior of the human body visible in three dimensions and in real time. |
| Mrs. |
abbreviation of "Mistress," used as a conventional title of courtesy for a married woman and usually placed before the name she has taken in marriage. |
| Mrs. Grundy |
in Tom Morton's eighteenth-century play Speed the Plough, a character who never appears, but who is known as a stern, moralistic upholder of propriety. [2 definitions] |
| Mrs. Malaprop |
in the eighteenth-century play The Rivals by Richard Sheridan, a character who makes hilarious blunders in her use of language. (Cf. malapropism.) |
| MS1 |
abbreviation of "Mississippi," a U.S. state on the Gulf of Mexico between Alabama and Louisiana. |
| MS2 |
abbreviation of "multiple sclerosis," a degenerative disease of the nervous system in which nerve cells of the brain or spinal cord lose their myelin sheaths, resulting in hardening of the neural tissue, speech difficulties, and loss of muscular coordination. |
| MS3 |
abbreviation of "manuscript," a text as prepared by the author to submit for publication. |
| Ms. |
a conventional title of courtesy often used before the surname of a single or married woman. |
| M.S. |
abbreviation of "Master of Science," a master's degree awarded usu. in science, technology, or mathematics. |
| MSDS |
an abbreviation for "Material Safety Data Sheet." An MSDS tells the proper, safe way to handle a particular substance. |
| MSG |
abbreviation of "monosodium glutamate," a white crystalline powder that intensifies the flavor of foods, esp. meat, often used in Chinese cuisine. |
| Msgr. |
(sometimes l.c.) abbreviation of "Monsignor," a title conferred upon certain prelates, such as dignitaries of the Roman Catholic Church. |
| m'sieur |
contracted form of "monsieur". |
| MSS |
abbreviation of "manuscripts." |
| MST |
abbreviation of "Mountain Standard Time," the standard time used in the Rocky Mountain region of the United States, seven hours behind Greenwich time. |
| MT |
abbreviation of "Montana," a northwestern U.S. state on the Canadian border between North Dakota and Idaho. |
| Mt. |
abbreviation of "mount" or "mountain." |
| Mt. Hime |
also known as Himeyama, site of Himeji Castle in Hyogo Prefecture, Japan. |