equipollent

adjective

1. equal in power, effect, etc.; equivalent.
2. Logic. (of propositions, propositional forms, etc.) logically equivalent in any of various specified ways.

noun

3. an equivalent.

adjective

1. equal or equivalent in significance, power, or effect
2. logic (of two propositions) logically deducible from each other; equivalent
3. maths logic (of two classes) having the same cardinality

noun

4. something that is equipollent