equivalence

== English == === Alternative forms === æquivalence (obsolete) === Etymology === From French équivalence, from Medieval Latin aequivalentia. === Pronunciation === (Received Pronunciation, General American, Canada, General Australian) IPA(key): /ɪˈkwɪv.ə.ləns/ (New Zealand) IPA(key): /əˈkwəv.ə.ləns/ === Noun === equivalence (countable and uncountable, plural equivalences) (uncountable) The condition of being equivalent or essentially equal. (countable, mathematics) An equivalence relation; ≡; ~ (uncountable, logic) The relationship between two propositions that are either both true or both false. (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. (mathematics) A Boolean operation that is TRUE when both input variables are TRUE or both input variables are FALSE, but otherwise FALSE; the XNOR function. (geometry) A number in intersection theory. A positive-dimensional variety sometimes behaves formally as if it were a finite number of points; this number is its equivalence. (translation studies) The degree to which a term or text in one language is semantically similar to its translated counterpart. ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Verb === equivalence (third-person singular simple present equivalences, present participle equivalencing, simple past and past participle equivalenced) (transitive) To be equivalent or equal to; to counterbalance.