Meaning of equipollent

e•qui•pol•lent

Pronunciation: (ē"kwu-pol'unt, ek"wu-), [key]
— adj.
  1. equal in power, effect, etc.; equivalent.
  2. (of propositions, propositional forms, etc.) logically equivalent in any of various specified ways.
—n.
  1. an equivalent.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.