equivalence

(ē kwivə ləns, i-)

noun

  1. the condition of being equivalent; equality of quantity, value, force, meaning, etc.
  2. Chem. equality of combining capacity; the principle that different weights of different substances are equivalent in chemical reactions

Origin: Fr équivalence < ML aequivalentia

See equivalence in American Heritage Dictionary 4

noun
  1. The state or condition of being equivalent; equality.
  2. Mathematics An equivalence relation.
  3. Logic The relationship that holds for two propositions that are either both true or both false, so that the affirmation of one and the denial of the other results in contradiction.

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