 In mathematics, physics, and engineering, a Euclidean vector (sometimes called a geometric or spatial vector, or – as here – simply a vector) is a geometric object that has both a magnitude (or length) and direction.A vector is what is needed to "carry" the point to the point ; the Latin word "vector" means "one who carries".The magnitude of the vector is the distance between the two points and the direction refers to the direction of displacement from to .