An atmosphere is a surrounding environment or influence. If you and your coworkers talk behind each other's backs, you will create a nasty atmosphere at work.

Atmosphere was coined by 17th-century scientists combining the Greek words for vapor, atmos, and sphere, sphaira. The earth's atmosphere is the air and gas surrounding our planet. Atmosphere also describes the feeling of a place. A coffee shop might have a cool, artsy atmosphere. Some plants grow best in a damp atmosphere. In physics, atmosphere is a unit of pressure equal to the air pressure at sea level.

Definitions of atmosphere
  1. noun
    the envelope of gases surrounding any celestial body
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    the atmosphere and outer space as viewed from the earth
    blue, blue air, blue sky, wild blue yonder
    the sky as viewed during daylight
    mackerel sky
    a sky filled with rows of cirrocumulus or small altocumulus clouds
    type of:
    a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
  2. noun
    the mass of air surrounding the Earth
    “there was great heat as the comet entered the atmosphere
    synonyms: air
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    the atmosphere above a nation that is deemed to be under its jurisdiction
    type of:
    part, region
    the extended spatial location of something
  3. noun
    the weather or climate at some place
    “the atmosphere was thick with fog”
    synonyms: atmospheric state
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    air mass
    a large body of air with uniform characteristics horizontally
    (meteorology) winds spiraling outward from a high pressure center; circling clockwise in the northern hemisphere and counterclockwise in the southern
    (meteorology) rapid inward circulation of air masses about a low pressure center; circling counterclockwise in the northern hemisphere and clockwise in the southern
    fog, fogginess, murk, murkiness
    an atmosphere in which visibility is reduced because of a cloud of some substance
    an air mass of higher than normal pressure
    depression, low
    an air mass of lower pressure; often brings precipitation
    (British informal) an airless smoky smelly atmosphere
    type of:
    atmospheric condition, conditions, weather, weather condition
    the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation
  4. 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: atm, standard atmosphere, standard pressure
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    STP, s.t.p.
    standard temperature and pressure
    type of:
    pressure unit
    a unit measuring force per unit area
  5. noun
    a distinctive but intangible quality surrounding a person or thing
    “an atmosphere of defeat pervaded the candidate's headquarters”
    synonyms: air, aura, patina
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    an aura of heightened value or interest or meaning surrounding a person or thing
    a characteristic emotional quality
    vibe, vibration
    a distinctive emotional aura experienced instinctively
    type of:
    an essential and distinguishing attribute of something or someone
  6. noun
    a particular environment or surrounding influence
    “there was an atmosphere of excitement”
    synonyms: ambiance, ambience
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    genius loci
    the special atmosphere of a place
    gloom, gloominess, glumness
    an atmosphere of depression and melancholy
    miasm, miasma
    an unwholesome atmosphere
    feel, feeling, flavor, flavour, look, smell, spirit, tone
    the general atmosphere of a place or situation and the effect that it has on people
    a cause of worry or gloom or trouble
    bareness, bleakness, desolation, nakedness
    a bleak and desolate atmosphere
    a flashy vulgar tone or atmosphere believed to be characteristic of the American film industry
    the spirit of the time; the spirit characteristic of an age or generation
    type of:
    condition, status
    a state at a particular time
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