something that surrounds.

surroundings, environing things, circumstances, conditions, etc.; environment

He was too sick to be aware of his surroundings.

the act of encircling or enclosing.

enclosing or encircling.

being the environment or adjacent area.

noun

ambience , atmosphere , background , climate , community , environs , home , location , medium , milieu , neighborhood , setting , vicinity , locale , locality , precinct , ambiance , mise en scne , world , alentours , ambient , ambit , area , circumfusion , circumvention , compass , conditions , confines , entourage , environment , externality , orbit , periphery , purlieus , region