01 n. The whole mass of aëriform fluid surrounding the earth; -- applied also to the gaseous envelope of any celestial orb, or other body; as, th…
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1.
The whole mass of aëriform fluid surrounding the earth; -- applied also to the gaseous envelope of any celestial orb, or other body; as, the atmosphere of Mars.(Physics)“An atmosphere of cold oxygen.” — Miller.
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2.
A supposed medium around various bodies; as, electrical atmosphere, a medium formerly supposed to surround electrical bodies.
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3.
The pressure or weight of the air at the sea level, on a unit of surface, or about 14.7 lbs. to the sq. inch.“Hydrogen was liquefied under a pressure of 650 atmospheres.” — Lubbock.
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4.
Any surrounding or pervading influence or condition.“The chillest of social atmospheres.” — Hawthorne.
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5.
The portion of air in any locality, or affected by a special physical or sanitary condition; as, the atmosphere of the room; a moist or noxious atmosphere.