[ih-kwiv-uh-luh ns or for 3, ee-kwuh-vey-luh ns] /ɪˈkwɪv ə ləns or for 3, ˌi kwəˈveɪ ləns/

noun, Also, (for defs 1, 2).
the state or fact of being equivalent; equality in value, force, significance, etc.
an instance of this; an equivalent.
Chemistry. the quality of having equal valence.
Logic, Mathematics.

(of a logical or mathematical relationship) reflexive, symmetrical, and transitive.
the relationship of being unequal or incomparable

the state of being equivalent or interchangeable
(maths, logic)


1540s, from French équivalence, from Medieval Latin aequivalentia, from aequivalentem (see equivalent). Related: Equivalency (1530s).


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