mutualvariable

noun
UK /ˈmjuːtʃuəl ˈveəriəbl/
US /ˈmjuːtʃuəl ˈveriəbl/

A mutual variable is a thing that two or more people share and can change together.

In their science project, the shared temperature was a mutual variable that both students had to watch.


OTHER MEANINGS

2. In math, a value that two equations or functions both use and that can change.

The two formulas were linked by a mutual variable, so changing it changed both results.

3. In computing, a piece of data that two programs or threads can both read and change.

The two threads updated the mutual variable at the same time, which caused a bug.

4. In everyday talk, something two people both care about and that can shift.

Trust was their mutual variable, and it grew or shrank with each choice they made.