We call this air velocity a vector (a 3 dimensional vector) because it has three pieces of information. Other examples of vectors would be: forces, electric fields, acceleration, displacement.

Any two dimensional vector can be expressed as a sum of one horizontal component and one vertical component. (In three dimensions it is necessary to add a third component at right angles to the other ...

Revise working with three-dimensional coordinates & two-dimensional vector pathways for your National 5 Maths exam. Nat 5 Maths - Working with three-dimensional coordinates. revision-guideNat 5 ...

If the vector represents a real three dimensional (or 2d) thing, you could also say it has magnitude and direction. But I also like the Wikipedia definition. Vector: an element of vector space.