In·te·ri·or a.
 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.
 2. Remote from the limits, frontier, or shore; inland; as, the interior parts of a region or country.
 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.


 interior angle
      n : the angle inside two adjacent sides of a polygon [syn: {internal
          angle]