vector 1. (mathematics) A member of a vector space.
2. (graphics) A line or movement defined by its end points, or by the current position and one other point. See vector graphics. 3. (operating system) A memory location containing the address of some code, often some kind of exception handler or other operating system service. By changing the vector to point to a different piece of code it is possible to modify the behaviour of the operating system. Compare hook. 4. (programming) A one-dimensional array. Last updated: 1996-09-30