atmosphere /atˈməs-fēr/

1. The gaseous envelope that surrounds the earth or any of the celestial bodies
2. Any gaseous medium
3. A unit of atmospheric pressure equal to the pressure exerted by a column of mercury 760 millimetres in height at 0ºC, practically the same as standard atmosphere (see under standard)
4. The air or climate in a place
5. A feeling of space and distance in a picture
6. Any surrounding influence or pervading feeling (figurative)

atmospherˈic /-ferˈik/ or atmospherˈical adjective

1. Of or depending on the atmosphere
2. Having a perceptible atmosphere (eg of a place, music, etc)

atmospherˈically adverb

atmospherˈics plural noun

Noises interfering with radio reception, due to electric disturbances in the ether

atmospheric engine noun

An early variety of steam engine in which the steam is admitted only to the underside of the piston

atmospheric hammer noun

A hammer driven by compressed air

atmospheric perspective noun

Aerial perspective

atmospheric pollution noun

Harmful concentrations of gases and aerosols in the atmosphere

atmospheric pressure noun

The pressure exerted by the atmosphere at the surface of the earth due to the weight of the air

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