sektor

Se​ktor is a term used in several languages to denote a part, division, or domain that forms part of a larger whole. The word derives from Latin sector and French secteur, and is adapted in languages such as Indonesian and Malay as sektor. In English, the cognate is sector and is sometimes spelled sektor in loanword contexts.

Economics and planning: In economics, a sector refers to a broad area of activity that shares a common purpose, such as the primary (extractive), secondary (manufacturing), and tertiary (services) sectors. Sector classification helps analyze economic structure, growth, and policy effects. Some frameworks also include a quaternary sector for knowledge-based activities.

Geometry: In plane geometry, a sector of a circle is the region bounded by two radii and the corresponding arc, characterized by its central angle and arc length.

Computing and storage: In data storage, a sector is the smallest addressable unit on a disk or flash memory. Sectors are arranged into tracks and are the granularity for data access; common sizes include 512 bytes or 4 KiB, though newer devices may vary.

Administrative usage: In some countries, sector denotes an administrative or planning unit within a city, region, or district. Boundaries and authority vary by country, and the term is used in planning, statistics, and governance contexts.