Ulkopuoli
Ulkopuoli is a Finnish term meaning the exterior or outside part of something. It denotes the side or region oriented away from the interior or from a given reference point. The concept is commonly used in everyday language as well as in technical contexts to describe the outer surface, façade, or external aspects of objects, buildings, or materials. Its opposite is sisäpuoli, or the inside.
The word derives from ulko- meaning outside and puoli meaning side. In ordinary use, ulkopuoli refers to
In mathematics, specifically in topology, ulkopuoli refers to the exterior of a subset A in a topological
Outside uses of the term extend to design, architecture, and everyday description of objects. The ulkopuoli