[sec.tor] n [LL, fr. L, cutter, fr. secare to cut--more at saw] (1570) 1 a: a geometric figure bounded by two radii and the included arc of a circle b (1): a subdivision of a defensive military position (2): a portion of a military front or area of operation c: an area or portion resembling a sector "bilingual ~ of town --David Kleinberg" d: a sociological, economic, or political subdivision of society "greater cooperation between the public and private ~s --Peter Chapman"
2: a mathematical instrument consisting of two rulers connected at one end by a joint and marked with several scales
3: a subdivision of a track on a computer disk
[2]sec.tor vt sec.tored ; sec.tor.ing (1884): to divide into or furnish with sectors