Scalar

[Sarah]

In the quaternion analysis, a quantity that has magnitude, butnot direction; -- distinguished from a vector, which has bothmagnitude and direction.

[Sarah]

A scalar is a baby who cries a lot and has to have everything his or her way. A spoiled kid. Can be use on older people as well, to call them spoiled, childish, or immature.

[Tariq Zaki]

something that has size but no direction, such as a quantity, distance, speed, or temperature

[Ernesto]

(of a quantity) having only magnitude, not direction.