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mesh any of the open spaces in a net, sieve, wire screen, or the like. [8 definitions]
meshuga (informal) crazy; insane.
meshwork something of or like mesh; meshes or network.
mesmerism the theories and practices of Franz Mesmer, esp. those involving hypnotism and magnetic attraction of living beings.
mesmerize to induce a hypnotic trance in; hypnotize. [2 definitions]
meso- middle.
mesoblast in an embryo, the middle layer of cells; mesoderm.
mesocarp the middle layer or fleshy part of a ripened fruit.
mesoderm in an embryo, the middle layer of cells from which the skeletal, muscular, connective, and other tissues develop.
Mesolithic (sometimes l.c.) designating the Stone Age cultural period from about 10,000 to about 8,000 B.C., between the Paleolithic and the Neolithic periods, characterized by the use of small flint tools set in bone or wood.
mesomorphic of or pertaining to a muscular human body type. (Cf. ectomorphic, endomorphic.)
meson any of a group of elementary particles that react strongly with other particles, and that have a mass between that of the electron and that of the proton.
mesosphere the earth's atmosphere between the stratosphere and the thermosphere, or from twenty miles to fifty miles above the earth's surface.
mesothelioma a tumor of the mesothelium, often malignant and possibly caused by the breathing in of particles of asbestos.
mesothelium the cell layer that lines such body cavities as the heart, chest, and abdomen.
Mesozoic of, relating to, or designating the geological era between the Paleozoic and the Cenozoic, from approximately 220 million to 65 million years ago, when dinosaurs appeared and became extinct and ferns were abundant. [2 definitions]
mesquite any of several shrubs or small trees of the legume family, found in the southwestern United States and Mexico, which bear pods rich in sugar that are used as fodder for livestock. [2 definitions]
mess a state of dirtiness or disorder, or something characterized by such. [11 definitions]
message a communication of usu. quite specific information by speech, writing, symbols, or other means. [5 definitions]
messaging the practice of sending and receiving electronic messages by computer or mobile device.
mess around (informal) to putter or spend time idly. [2 definitions]