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Webster 1913 Edition


Equivalence

E-quiv′a-lence

(ē̍-kwĭv′ȧ-lens)
,
Noun.
[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
,
Noun.
, 2.
[R.]

E-quiv′a-lence

,
Verb.
T.
To be equivalent or equal to; to counterbalance.
[R.]
Sir T. Browne.

Webster 1828 Edition


Equivalence

EQUIV'ALENCE

,
Noun.
[L. oequus, equal, and valens, from valeo, to be worth.]
1.
Equality of value; equal value or worth. Take the goods and give an equivalence in corn.
2.
Equal power or force. [To equivalence, a verb, used by Brown, has not gained currency.]

Definition 2024


equivalence

equivalence

See also: équivalence

English

Noun

equivalence (plural equivalences)

  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 or both input variables are FALSE, but otherwise FALSE; the XNOR function.
  6. (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.

Translations

Verb

equivalence (third-person singular simple present equivalences, present participle equivalencing, simple past and past participle equivalenced)

  1. (transitive) To be equivalent or equal to; to counterbalance.
    (Can we find and add a quotation of Sir Thomas Browne to this entry?)