Definition of atmosphere noun from the Oxford Advanced Learner's Dictionary

      

    atmosphere

     noun
    noun
    BrE BrE//ˈætməsfɪə(r)//
     
    ; NAmE NAmE//ˈætməsfɪr//
     
    The Earth and the atmosphere, Waste and pollution
     
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  1. 1  the atmosphere [singular] the mixture of gases that surrounds the earth the upper atmosphere pollution of the atmosphere See related entries: The Earth and the atmosphere, Waste and pollution
  2. 2  [countable] a mixture of gases that surrounds another planet or a star Saturn’s atmosphere
  3. 3  [countable] the air in a room or in a confined space; the air around a place a smoky/stuffy atmosphere These plants love warm, humid atmospheres.
  4. 4  [countable, singular, uncountable] the feeling or mood that you have in a particular place or situation; a feeling between two people or in a group of people a party atmosphere The hotel offers a friendly atmosphere and personal service. Use music and lighting to create a romantic atmosphere. There was an atmosphere of mutual trust between them. The children grew up in an atmosphere of violence and insecurity. The old house is full of atmosphere (= it's very interesting).
  5. Word Origin mid 17th cent.: from modern Latin atmosphaera, from Greek atmos ‘vapour’ + sphaira ‘ball, globe’.Extra examples Before the parade, the atmosphere was electric. Dangerous gases have escaped into the atmosphere. His blunt comments really soured the atmosphere. His funny remarks lightened the atmosphere. Last night’s storm had cleared the atmosphere. Pesticides can kill wildlife and pollute the atmosphere. She could sense the hostile atmosphere in the room. She tries to create an atmosphere of calm and security for her children. Since their argument there had been a strained atmosphere between them. The atmosphere was charged with excitement. The bar has a relaxed, friendly atmosphere. The restaurant has a comfortable atmosphere. The spaceship should re-enter the earth’s atmosphere later today. The whole atmosphere in the stadium changed dramatically. levels of radiation in the atmosphere the rarefied atmosphere of academic life Pollution of the atmosphere is a global problem. The northern lights are caused by charged particles in the upper atmosphere. The old house is full of atmosphere. The outermost part of the sun’s atmosphere is called the corona. There was an atmosphere of mutual respect between them.Idioms
    a heavy silence/atmosphere
     
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    a situation when people do not say anything, but feel embarrassed or uncomfortable
See the Oxford Advanced American Dictionary entry: atmosphere