constant
//ˈkɒnstənt//
Adjective
1
Occurring continuously over a period of time; unchanging in nature, value, or extent.
The machine requires constant temperature to function properly.
2
Remaining faithful and dependable; loyal.
She has been a constant friend through all my difficulties.
Noun
constantsPlural
1
A situation or state of affairs that does not change.
Change is the only constant in life.
2
A number or quantity that does not vary in a mathematical expression or scientific context.
In the equation E=mc², c is a constant representing the speed of light.