EQUIPOLLENCE
Etymology
Noun
equipollence (countable and uncountable, plural equipollences)
The condition of being equipollent; equality of power, force, signification, or application.
(logic) Sameness of signification of two or more propositions which differ in language.
Source: Wiktionary
E`qui*pol"lence, E`qui*pol"len*cy, n. Etym: [Cf. F. équipollence. See
Equipollent.]
1. Equality of power, force, signification, or application. Boyle.
2. (Logic)
Definition: Sameness of signification of two or more propositions which
differ in language.
Source: Webster’s Unabridged Dictionary 1913 Edition