<p><strong>Adjective</strong></p><ul><li>Outer; being on the outer side; the exterior surface; exterior decorations.</li><li>Intended or suitable for outdoor use; exterior paint.</li><li>Situated or being outside; pertaining to or connected with what is outside; the exterior territories of a country.</li></ul><p><strong>Noun</strong></p><ul><li>The outer surface or part; outside.</li><li>Outward form or appearance; e.g., "She has a placid exterior, but inside she is tormented."</li><li>The collection of points not contained in the closure of a given set.</li></ul>