EQUIVALENCE
comparison, compare, equivalence, comparability
(noun) qualities that are comparable; “no comparison between the two books”; “beyond compare”
equivalence
(noun) essential equality and interchangeability
equality, equivalence, equation, par
(noun) a state of being essentially equal or equivalent; equally balanced; “on a par with the best”
Source: WordNet® 3.1
Etymology
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.
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.
Source: Wiktionary
E*quiv"a*lence, n. Etym: [Cf. F. équivalence, LL. aequivalentia.]
1. The condition of being equivalent or equal; equality of worth,
value, signification, or force; as, an equivalence of definitions.
2. Equal power or force; equivalent amount.
3. (Chem.)
(a) 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. See Valence.
(b) The degree of combining power as determined by relative weight.
See Equivalent, n., 2. [R.]
E*quiv"a*lence, v. t.
Definition: To be equivalent or equal to; to counterbalance. [R.] Sir T.
Browne.
Source: Webster’s Unabridged Dictionary 1913 Edition