Ex-tē'ri-or1, a.
(89), a. [Lat. exterior, comparative of exter or exterus, on the outside, outward, foreign, strange; Pr., Sp., & Pg. exterior, It. esteriore, Fr. extérieur.] 1. External; outward; pertaining to that which is external; as, the exterior surface of a convex lens. Sith nor the exterior nor the inward man Resemble that it was. Shak.
- External; on the outside, with reference to a person; extrinsic; as, an object exterior to a man, opposed to what is within, or in his mind. “Without exterior help sustained.” Milton.
- Relating to foreign nations; foreign; as, the exterior relations of a state or kingdom.
Exterior angle (Geom.), the angle included between any side of a triangle or polygon and the prolongation of the adjacent side; also, an angle included between a line crossing two parallel lines and either of the latter on the outside.