milieu, surroundings (noun)

the environmental condition

environment, environs, surroundings, surround (noun)

the area in which something exists or lives

"the country--the flat agricultural surround"

surroundings (Noun)

the area surrounding someone or something, together with the objects and circumstances in the vicinity; the environment or ambiance

surroundings (Noun)

All parts of the universe that are not within the thermodynamic system of interest.

Surroundings

Surroundings are the area around a given physical or geographical point or place. The exact definition depends on the field. Surroundings can also be used in geography (when it is more precisely known as vicinity, or vicinage) and mathematics, as well as philosophy, with the literal or metaphorically extended definition. In thermodynamics, the term (and its synonym, environment) is used in a more restricted sense, meaning everything outside the thermodynamic system. Often, the simplifying assumptions are that energy and matter may move freely within the surroundings, and that the surroundings have a uniform composition.