Equivalence

Origin

From French équivalence

Full definition of equivalence

Noun

1. (uncountable) The condition of being equivalent or essentially equal.
2. (countable, mathematics) An equivalence relation; ≡; ~
3. (uncountable, logic) The relationship between two propositions that are either both true or both false.
4. (chemistry) The quantity of the combining power of an atom, expressed in hydrogen units; the number of hydrogen atoms can combine with, or be exchanged for; valency.
5. a Boolean operation that is TRUE when both input variables are TRUE but otherwise FALSE; the XNOR function.

Verb

1. (transitive) To be equivalent or equal to; to counterbalance.