I. ˈsek-tər, -ˌtȯr noun
Etymology: Late Latin, from Latin, cutter, from secare to cut — more at saw
Date: 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 sector of town — David Kleinberg
d. : a sociological, economic, or political subdivision of society
cooperation between the public and private sector 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
• sec·tor·al ˈsek-t(ə-)rəl adjective
II. -tər transitive verb
( sec·tored ; sec·tor·ing -t(ə-)riŋ)
Date: 1884
: to divide into or furnish with sectors