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magnetometer a device for determining the strength and direction of magnetic fields, esp. that of the earth.
magneton a unit used to express the magnetic moment of an atomic or subatomic particle.
magnetopause the outer limit of the area in which a planet's magnetic field is stronger than the interplanetary field.
magnetosphere a region between five hundred and several thousand miles above the earth's surface, in which charged particles are trapped by the earth's magnetic field.
magnetron a vacuum tube that produces microwaves by the action of an external magnetic field on electrons in the tube.
magni- large; great.
Magnificat a canticle of praise sung by the Virgin Mary in the Bible. [2 definitions]
magnification the act, process, or product of magnifying or being magnified. [2 definitions]
magnificence the quality of being grand or splendid.
magnificent very grand or splendid; extremely impressive in size or beauty. [2 definitions]
magnifico formerly, a nobleman of Venice. [2 definitions]
magnify to cause to appear larger, as through the use of a lens. [4 definitions]
magnifying glass a lens that enlarges the image of objects seen through it.
magniloquent pompous, grandiose, or overblown in speech or expression.
magnitude size, extent, or dimension. [3 definitions]
magnolia any of a number of widely distributed trees or shrubs, usu. with large, colorful, aromatic flowers that bloom before the leaves appear. [2 definitions]
magnum a wine or spirit bottle holding 1.5 liters, or about fifty ounces. [3 definitions]
magnum opus a great work of art, literature, or music, esp. a particular person's masterpiece.
magpie any of several related birds having long tails, white markings on black plumage, and a noisy, chattering call. [3 definitions]
maguey any of numerous plants related to the amaryllis and found in tropical America, such as the agave and the century plant.
mag wheel an automobile or truck wheel of steel alloyed with magnesium or aluminum and thus relatively lightweight and shiny.