According to Oxford Dictionary, environs is "the area surrounding a place". I am writing a text about Barsian - a small city which is located around Isfahan. Can I write Barsian is located in Isfahan environs? Is in the correct preposition here?
To me the word "environs" suggests an area close to a town.
My first alternative thought on wording was "Barsian is located in in the suburbs of (the town or city of) Isfahan", but then Wikipedia told me that Isfahan is a province of Iran and that Barsian is a village. So I think correct phrases would include:
Barsian is located in in the province of Isfahan
Barsian is located in in the Isfahan province
The Isfahan province contains Barsian
The Isfahan province contains the Barsian village
The Isfahan province contains the village of Barsian
I don't think you found this definition of environ because your definition describes it as a noun whereas environ is a verb that means:
Perhaps you confused it with environment.
On the other hand I don't know anything about those cities, Isfahan and Barsian. But if Bastian surrounds or encloses Isfahan you can write:
Barsian environs (or surrounds or encloses) Isfahan.