[ ee-kwuh-pol-uh nt, ek-wuh- ]
/ ˌi kwəˈpɒl ənt, ˌɛk wə- /


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


an equivalent.

Origin of equipollent

1375–1425; late Middle English < Latin aequipollent- (stem of aequipollēns) of equal value, equivalent to aequi- equi- + pollent- (stem of pollēns) able, present participle of pollēre to be strong

OTHER WORDS FROM equipollent

e·qui·pol·lence, e·qui·pol·len·cy, noune·qui·pol·lent·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for equipollent

British Dictionary definitions for equipollent

/ (ˌiːkwɪˈpɒlənt) /


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


something that is equipollent

Derived forms of equipollent

equipollence or equipollency, nounequipollently, adverb

Word Origin for equipollent

C15: from Latin aequipollēns of equal importance, from equi- + pollēre to be able, be strong
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012