| megabyte |
a unit of electronic memory capacity equal to 1,048,576 bytes, or approximately one million bytes. |
| megacycle |
see "megahertz." |
| megadeath |
a million dead people, as in a nuclear explosion. |
| megafauna |
all the large land animals living in a particular area or at a particular time. |
| megahertz |
a unit of frequency equal to one million cycles per second or one million hertz. (abbr.: MHz) |
| megalith |
a huge stone, esp. one used in prehistoric times as a monument. |
| megalo- |
huge; gigantic; too large. |
| megalomania |
a mental disorder characterized by delusions of power, wealth, or importance. [2 definitions] |
| megalopolis |
an extremely large city or a large, densely populated region surrounding and including such a city. |
| megalosaur |
any of a genus of huge carnivorous dinosaurs. |
| megaparsec |
a unit of astronomical distance equal to one million parsecs. |
| megaphone |
a hand-held, funnel-shaped device used to amplify and direct the sound of a voice. |
| megapixel |
a unit equal to one million pixels that is used to measure the resolution of a digital image. |
| megaton |
a unit of power used in measuring the force of nuclear weapons, equal to the explosive force of a million tons of TNT. |
| megawatt |
unit of power equal to one million watts. |
| Meiji |
the name given to the reign of Emperor Mutsuhito of Japan, who ruled from 1867 to 1912. |
| Meiji Restoration |
a period in Japanese history that is characterized by the downfall of feudalism and the opening of Japan to trade and diplomatic relations with the West. |
| meiosis |
the process in which the diploid chromosomes of a cell are replicated once, followed by two divisions of the nucleus, to give rise to four haploid cells that may develop into gametes or spores. |
| Meistersinger |
a member of a medieval German guild organized for the cultivation of music and poetry. |
| Mekong |
a major river originating in China and flowing southeast through Myanmar, Laos, Thailand, Cambodia, and Vietnam. |
| Mekong Delta |
an expansive delta region formed by the Mekong River in southeast Vietnam, whose wetlands make it a major rice producer. The Mekong Delta was a scene of heavy combat between U.S. and Viet Cong troops during the Viet Nam War. |