two-valued variable

noun
UK /tuː ˈvæljuːd ˈveəriəbl/
US /tuː ˈvæljuːd ˈveriəbl/

A two-valued variable is a thing that can only be one of two choices, like yes or no.

The light switch is a two-valued variable because it is either on or off.


OTHER MEANINGS

2. In math and logic, a variable that can take exactly two possible values, often true and false.

In the statement 'the door is open,' the door's state is a two-valued variable.

3. In computing, a variable that stores only one of two states, such as 0 or 1.

The program uses a two-valued variable to remember whether the user is logged in.

4. In statistics, a variable with only two possible categories, like male or female.

The survey asked a two-valued variable question: do you own a pet, yes or no?