a. [ L., compar. fr. inter between: cf. F. intérieur. See Inter-, and cf. Intimate. ] [ 1913 Webster ]

1. Being within any limits, inclosure, or substance; inside; internal; inner; -- opposed to exterior, or superficial; as, the interior apartments of a house; the interior surface of a hollow ball. [ 1913 Webster ]

2. Remote from the limits, frontier, or shore; inland; as, the interior parts of a region or country. [ 1913 Webster ]

Interior angle (Geom.), an angle formed between two sides, within any rectilinear figure, as a polygon, or between two parallel lines by these lines and another intersecting them; -- called also internal angle. --
Interior planets (Astron.), those planets within the orbit of the earth. --
Interior screw, a screw cut on an interior surface, as in a nut; a female screw.

Syn. -- Internal; inside; inner; inland; inward. [ 1913 Webster ]

n. 1. That which is within; the internal or inner part of a thing; the inside. [ 1913 Webster ]

2. The inland part of a country, state, or kingdom. [ 1913 Webster ]

Department of the Interior, that department of the government of the United States which has charge of pensions, patents, public lands and surveys, the Indians, education, etc.; that department of the government of a country which is specially charged with the internal affairs of that country; the home department. --
Secretary of the Interior, the cabinet officer who, in the United States, is at the head of the Department of the Interior. [ 1913 Webster ]

v. t. (psychology) to incorporate within oneself; same as interiorize. [ Chiefly Brit. ]
Syn. -- internalize, internalise, interiorize. [ WordNet 1.5 ]

n. State of being interior. [ 1913 Webster ]

v. t. (Psychology) to incorporate within oneself.
Syn. -- internalize, internalise, interiorise. [ WordNet 1.5 ]

adv. Internally; inwardly.