The gases surrounding the Earth or any astronomical body.
The air in a particular place.
(figurative) The conditions (such as music, illumination etc.) that can influence the mood felt in an environment.
(figurative) The apparent mood felt in an environment.
A unit of measurement for pressure equal to 101325 Pa (symbol: atm), approximately the atmospheric pressure at sea level.
(television, film, uncountable) Extras in a scene who have no spoken lines.