scalar
nounUK /ˈskeɪ.lər/
US /ˈskeɪ.lɚ/
A scalar is just a single number, like 5 or 12.
In math class, we learned that a scalar has size but no direction.
OTHER MEANINGS
2. In physics, a quantity described only by size, not direction.
Temperature is a scalar because it has no direction.
3. In computing, a single value rather than a list or array.
The program stores each score as a scalar.
4. In music, a set of notes arranged in rising or falling order.
The singer practiced the scalar pattern up and down the scale.