sector Definition

sector
noun

1. geom.
A portion of a circle bounded by two radii and an arc.
2. astron.
An object of similar shape, especially one for measuring angular distance.
3. A division or section of a nation's economic operations. Compare private sector, public sector.

Thesaurus: class, division, category, caste, segment, hierarchy, community.
4. A part of an area divided up for military purposes.
5. A mathematical measuring instrument consisting of two graduated rules hinged together at one end.

Derivative: sectoral
adj

Etymology: 16c: Latin, from secare to cut.