exclusive-choice rule

noun
UK /ɪkˈskluːsɪv tʃɔɪs ruːl/
US /ɪkˈskluːsɪv tʃɔɪs ruːl/

A rule that says you can pick only one thing and not the others.

Under the exclusive-choice rule, each player may choose only one card from the pile.


OTHER MEANINGS

2. A voting or decision rule in which selecting one option automatically excludes all others.

The committee applied the exclusive-choice rule, so members could vote for just one candidate.

3. A logic or grammar rule that allows only one of several alternatives to be true at a time.

The exclusive-choice rule in the puzzle means exactly one of the three statements is correct.

4. A design principle in menus or forms where only one item can be selected at once.

The app uses an exclusive-choice rule for radio buttons, so tapping a new option clears the old one.