Atmosphere

At·mos·phere

Atmosphere

n.
  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.
  2. A supposed medium around various bodies; as, electrical atmosphere, a medium formerly supposed to surround electrical bodies.
  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.
  4. Any surrounding or pervading influence or condition.
    The chillest of social atmospheres.
  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.