Definition of region: the extended spatial location of
something; "the farming regions of France"; "religions in all
parts of the world"; "regions of outer space"   a large
indefinite location on the surface of the Earth; "penguins
inhabit the polar regions"  the approximate amount of something
(usually used prepositionally as in `in the region of'); "it was
going to take in the region of two or three months to finish the
job"; "the price is in the neighborhood of $100"  a knowledge
domain that you are interested in or are communicating about;
"it was a limited realm of discourse"; "here we enter the region
of opinion"; "the realm of the occult"