[noun] a particular environment or surrounding influence; "there was an atmosphere of excitement" Synonyms:ambiance, ambience
[noun] a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade Synonyms:standard atm, standard pressure
[noun] the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air" Synonyms:air
[noun] the weather or climate at some place; "the atmosphere was thick with fog" Synonyms:atmospheric state
[noun] the envelope of gases surrounding any celestial body
[noun] a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance" Synonyms:air, aura