Definition of scalars:
(adj) :
(mathematics) Having magnitude but not direction.
(adj) :
(computer science) Consisting of a single value (e.g. integer or string) rather than multiple values (e.g. array).
(adj) :
Of, or relating to scale.
(adj) :
(physics) Relating to particles with a spin (quantum angular momentum) of 0 (known as spin 0).
(n) :
(mathematics) A quantity that has magnitude but not direction; compare vector.
(adj) :
(music) Of or pertaining to a musical scale.