1. The quality or state of being equipollent; equality in force, power, or effect.
Usage: formal; logic and philosophy
2. In logic, the relation between two propositions that have the same truth value or logical force.
Usage: technical; logic

Examples

• The equipollence of the two arguments made it difficult to choose between them.
• In formal logic, equipollence ensures that two statements have identical truth conditions.
• The equipollence of their positions meant neither side held a decisive advantage.
• Philosophers debated the equipollence of different ethical frameworks.
• The equipollence principle states that logically equivalent formulas can be substituted for one another.