being within; inside of anything; internal; inner; further toward a center

the interior rooms of a house.

of or pertaining to that which is within; inside

an interior view.

situated well inland from the coast or border

the interior towns of a country.

of or pertaining to the inland.

domestic

interior trade.

private or hidden; inner

interior negotiations of the council.

pertaining to the mind or soul; mental or spiritual

the interior life.

the internal or inner part; inside.

Architecture .

the inside part of a building, considered as a whole from the point of view of artistic design or general effect, convenience, etc.

a single room or apartment so considered.

a pictorial representation of the inside of a room.

the inland parts of a region, country, etc.

the Alaskan interior.

the domestic affairs of a country as distinguished from its foreign affairs

the Department of the Interior.

the inner or inward nature or character of anything.

Mathematics . the largest open set contained in a given set, as the points in a circle not including the boundary.