An outlying area; area in proximity to something / An environment

which surrounds something

present participle of surround

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

plural of surrounding

(Britain) Anything, such as a fence or border, that surrounds something.

(transitive) To encircle something or simultaneously extend in all directions. / (transitive) To enclose or confine something on all sides so as to prevent escape.

simple past tense and past participle of surround

Things bordering, adjacent to, or near something else; surroundings.

Third-person singular simple present indicative form of surround