vector
A quantity that has magnitude and direction, generally represented by a directed line segment, the length of which represents the magnitude while its orientation indicates direction. More simply, vector is a course or compass direction. I like to use to the word vector as an alternative to "plot", because more often than not, I find that my novels and stories tend in certain directions of their own volition, and that the only way to know where they're headed is to travel with them, using an outline as a compass only to keep my bearings.