Definition of "sector" []

• Mathematics The portion of a circle bounded by two radii and the included arc. (noun)
• Mathematics A measuring instrument consisting of two graduated arms hinged together at one end. (noun)
• A division of a defensive position for which one military unit is responsible. (noun)
• A division of an offensive military position. (noun)
• A part or division, as of a city or a national economy: the manufacturing sector; the private sector. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Best Co. has revised its rating outlook for the title sector to stable from negative, principally due to the improvement in operating performance over the past year, as well as the significantly improved balance sheet strength of the major title insurers, which A.M."
• "As such, the sector is usually the first to react to positive and negative economic developments."
• "Behind the "woebetide the poor UK web start-up" debate, European activity in this sector is accelerating significantly, and the implications are no less profound."