rigid designator
noun
logic
an expression that identifies the same individual in every possible world: for example, "Shakespeare" is a rigid designator since it is possible that Shakespeare might not have been a playwright but not that he might not have been Shakespeare
Words nearby rigid designator
rightward,
rightwards,
righty,
rigi,
rigid,
rigid designator,
rigid frame,
rigid motion,
rigidify,
rigidity,
rigidize