sidospinnan

Sidospinnan is a term found in Swedish-language technical and educational contexts used to denote the side surface of a three-dimensional object—the surfaces that wrap around the object and are not the base or end faces. The concept is most commonly encountered in geometry as well as in architecture and product design literature. The sidospinnan forms the lateral surface of a solid and, together with the base and end faces, contributes to the object's total surface area.

In geometric terms, the sidospinnan is the area of the surfaces that constitute the outer side of a solid. For a cylinder, the sidospinnan is the curved surface, while for a rectangular prism, it comprises the rectangular side faces. The calculation of lateral (sidospinnans) area depends on the shape of the cross-section and the height or length of the object, with standard formulas used for cylinders and prisms.

Beyond pure geometry, sidospinnan is also used more loosely in architecture, industrial design, and engineering to refer to exterior side panels or cladding on structures and devices. In these contexts, distinctions may be made between the sidospinnan and other surfaces such as the top, bottom, or internal faces.

The exact usage of the term can vary by field and author, and in many English-language sources the corresponding concepts are described using terms like lateral surface or side panel. See also lateral surface, surface area, panel.