scalar

adj. of or pertaining to a scalar

n. (Mathematics, Physics) quantity with magnitude and no direction

A scalar is a variable that only has magnitude, e.g. a speed of 40 km/h. Compare it with vector, a quantity comprising both magnitude and direction, e.g. a velocity of 40km/h north. A scalar (mathematics), a quantity which is independent of viewpoint, a non-tensor.A scalar (physics), the same as the notion of scalar in differential geometry.A scalar (computing), an atomic quantity that can hold only one value at a time.
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Noun
1. a variable quantity that cannot be resolved into components
(hypernym) variable, variable quantity
Adjective
1. of or relating to a directionless magnitude; "scalar implicatures"
(pertainym) scale

(n.)
In the quaternion analysis, a quantity that has magnitude, but not direction; -- distinguished from a vector, which has both magnitude and direction.
  

scalar