keyvariable
nounUK /ˈkiː ˈveəriəbl/
US /ˈki ˈveriəbl/
A key variable is the most important thing that can change and affect a result.
In the science experiment, temperature was the key variable that changed the outcome.
OTHER MEANINGS
2. In math, a key variable is the main letter or symbol that stands for a number you can change.
In the equation y = 2x + 3, x is the key variable.
3. In a game, a key variable is the main thing players can change to win.
Speed was the key variable in the racing game.
4. In weather study, a key variable is the main measurement that changes, like temperature.
Rainfall is a key variable for farmers.
5. In a plan, a key variable is the most important thing that might change.
The key variable for our picnic is the weather.