a mixture of gases that surrounds any planet:
the search for planets with a breathable atmosphere
the air that you breathe in a place:
The atmosphere in the room was so stuffy I could hardly breathe.
A few plants in an office will improve the atmosphere.
the character, feeling, or mood of a place or situation:
There's a very relaxed atmosphere in our office.
There has been an atmosphere of gloom in the factory since it was announced that it would be closing.
a feeling that a place has of being pleasant and interesting or exciting:
You want a restaurant that serves good food but has a little atmosphere too.
He put on some soft music and turned the lights down in order to give the room a little more atmosphere.
the mixture of gases that surrounds some planets, such as the earth; the air
a unit for measuring pressure
the character or mood of a place or situation:
The club provided a relaxed and friendly atmosphere for its members.
Atmosphere is also the mood or feeling produced by a work of literature.