Definition of: interior

(in·tir′ē·ər) adjective
1. Existing, pertaining to, or occurring within something or between limits; internal; inner: opposed to exterior.
2. Inland.
3. Of a private or confidential nature.
4. Of or pertaining to spiritual matters; not worldly.
5. Astron. Having an orbit within the earth's, as Mercury and Venus.
—noun
1. The internal part; inside.
2. The inland or central region of a country.
3. A painted scene or drop representing the inside of a dwelling, etc.
4. The domestic affairs of a country; home ministry.
5. The spiritual nature or basic character.
—Department of the Interior An executive department of the U.S. government (established in 1849), headed by the Secretary of the Interior, dealing with mines, government lands, parks and reservations, Indian affairs, wildlife, geological survey, etc. [<OF interieur <L interior, compar of inter within]
—in·te′ri·or′i·ty (-ôr′·ə·tē, -or′-) noun
—in·te′ri·or·ly adverb