From The Free On-line Dictionary of Computing (19 January 2023):
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.
(1996-09-30)