the gaseous envelope surrounding the earth; the air.

this medium at a given place.

Astronomy . the gaseous envelope surrounding a heavenly body.

Chemistry . any gaseous envelope or medium.

a conventional unit of pressure, the normal pressure of the air at sea level, about 14.7 pounds per square inch (101.3 kilopascals), equal to the pressure exerted by a column of mercury 29.92 in. (760 mm) high. Abbreviation

atm.

a surrounding or pervading mood, environment, or influence

an atmosphere of impending war; a very tense atmosphere.

the dominant mood or emotional tone of a work of art, as of a play or novel

the chilly atmosphere of a ghost story.

a distinctive quality, as of a place; character

The old part of town has lots of atmosphere.

to give an atmosphere to

The author had cleverly atmosphered the novel for added chills.

noun

air , envelope , heavens , pressure , sky , substratosphere , troposphere , ambience , aura , background , character , climate , color , environment , feel , feeling , flavor , impression , local color , medium , mood , place , property , quality , scene , semblance , sense , space , spirit , surroundings , taste , tone , ambiance , smell , milieu , mise en scne , world , aroma , savor , smack , barometer , decor , fascination , glamour , greenhouse effect , isobar , miasma , millibar , mystique , nimbus , ornamentation , pall , stratosphere , vibes , wavelength