Außenrand

Außenrand is a German noun meaning the outer edge, boundary, or perimeter of an object, area, or figure. The term is used in various technical and everyday contexts to denote what lies outside or at the boundary of something. Depending on context, synonyms include Rand, Umrandung, or Perimeter, though these can carry nuanced meanings in mathematics, design, or geography.

In geometry and mathematics: For a circle the Außenrand is the circumference; for polygons it is the closed polyline that forms the outer boundary. The interior is separated from the Außenrand by the figure's boundary. In some contexts, the term may emphasize the exterior side or surface rather than the interior.

In printing, publishing and design: The Außenrand refers to the outer margin of a page or layout—the space between the content and the page edge. Managing the Außenrand is important for readability, binding, trimming, and ensuring that text and images are not cut off during printing.

In computing and digital media: The term can describe the outer spacing around a user interface element, analogous to the CSS margin. It denotes space outside the element's border; the equivalent inner space is called padding or Innenabstand in German terminology.

Other uses: In cartography, geography, and manufacturing, the term denotes the edge of a region or the exposed outer surface of a component that may require finishing. The precise meaning is typically inferred from context, as the word simply refers to an outer boundary or border.