Definition of rigid designator in English:

rigid designator


  • A term that identifies the same object or individual in every possible world.

    • ‘Let's call something a rigid designator if in every possible world it designates the same object, a non-rigid or accidental designator if that is not the case.’
    • ‘Kripke held that the behavior of names in these environments can only be explained if we think of the names as being rigid designators - i.e., as devices which rigidly pick out an individual across possible worlds.’
    • ‘All these symbols are to be regarded as rigid designators.’