B1
the feeling which exists in a place or situation
Dictionary examples:
The library had an atmosphere of panic during exam week. (0.0)
The dentist's waiting room had an atmosphere of fear and shaky smiles. (0.0)
There was an atmosphere of surprise when the cat won the dog show. (0.0)
There's a very relaxed atmosphere in our office. (34.3)
There has been an atmosphere of gloom in the factory since it was announced that it would be closing. (70.6)