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medulla oblongata the lowermost part of the brain, which controls basic body functions such as breathing and blood circulation.
Medusa in Greek mythology, the only mortal one of the three Gorgons, who was killed by Perseus. [2 definitions]
meek unable or unwilling to assert oneself; lacking spirit; submissive; retiring. [2 definitions]
Meena Keshwar Kamal Afghan poet and activist, who was assassinated ten years after founding the Revolutionary Association of the Women of Afghanistan (RAWA) (b. 1956--d.1987).
meerkat a small mammal with gray and tan fur, related to the mongoose and native to South Africa.
meerschaum a hard, dense mineral found in white, claylike beds in the Mediterranean region, and carved into decorative objects. [2 definitions]
meet1 to come into contact with; encounter. [12 definitions]
meet2 proper; suitable.
meet halfway to compromise with.
meeting an encounter. [3 definitions]
meetinghouse a building, assembly hall, or house used for public meetings or worship, esp. by Quakers.
mega- large; great. [2 definitions]
megabuck (informal) one million dollars. [2 definitions]
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.
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.