exterior UK /ɪkˈstɪəɹɪə/US /ɪkˈstɪɹiɚ/adjective 3noun 3forms 1 adjective3 •Relating to the outside parts or surface of something.Sith nor the exterior nor the inward man / Resemble that it was. — 1599 •Outdoor. •Being from outside a country; foreign. noun3 •The outside part, parts or surface of something.The sticker was attached to the exterior of the package •A recording taken outside to be used in film-making, often including establishing shots.We'll get the last of the exteriors done tomorrow. •Foreign lands.She is our new minister of the exterior formsexteriors