1. The portion of a circle bounded by two radii and the included arc. 2. A measuring instrument consisting of two graduated arms hinged together at one end. 3. A division of a defensive position for which one military unit is responsible. 4. A division of an offensive military position. 5. the manufacturing sector; the private sector. 6. A bit or a set of bits on a magnetic storage device making up the smallest addressable unit of information. 7. To divide (something) into sectors.
