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aerology the branch of meteorology that deals with the entire atmosphere, esp. the upper atmosphere.
blizzard in meteorology, a violent snowstorm characterized by high winds of no less than 35 miles (56 kilometers) per hour and lasting three hours or more. A blizzard results in extremely reduced visibility. [1/2 definitions]
corona in meteorology, a ring or series of concentric rings seen around a heavenly body, caused by diffraction due to fine mist or dust in the atmosphere. (See aureole.) [1/5 definitions]
earth science any of the sciences, such as geology, geography, or meteorology, dealing with the origin, structure, and composition of the earth and its changes.
geophysics (used with a sing. verb) the branch of physics that deals with matters relevant to geology and includes oceanography, meteorology, seismology, and the like.
light air in meteorology, a wind with a speed of between one and three miles per hour.
light breeze in meteorology, a wind with a speed of between four and seven miles per hour.
meteorological of or pertaining to meteorology. [1/2 definitions]
occlude in meteorology, to form a composite weather front by the action of cold air overtaking a warm front and forcing it upward. [1/5 definitions]
trough in meteorology, a long narrow region of low barometric pressure relative to the surrounding area. [1/4 definitions]