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equivalence

[ih-kwiv-uh-luhns or, for 3, ee-kwuh-vey-luhns]

Origin

Equivalency www.ask.com/Equivalency Get Equivalency Find Equivalency

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noun Also, equivalency (for defs. 1, 2).

the state or fact of being equivalent; equality in value, force, significance, etc.

an instance of this; an equivalent.

Chemistry. the quality of having equal valence.

Logic, Mathematics.

Also called material implication. the relation between two propositions such that the second is not false when the first is true.

Also called material equivalence. the relation between two propositions such that they are either both true or both false.

the relation between two propositions such that each logically implies the other.

adjective

(of a logical or mathematical relationship) reflexive, symmetrical, and transitive.

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Equivalence is always a great word to know.

So is alkaline. Does it mean:

like or containing an alkali, which neutralize acids to form salts and turn red litmus paper blue, or having a pH value greater than 7

a compound capable of changing state or becoming inactive when subjected to heat or radiation

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Origin:
1535–45; < Middle French < Medieval Latin aequivalentia, equivalent to Latin aequivalent- equivalent + -ia -ia; see -ence

Related forms

non·e·quiv·a·lence, noun

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To equivalence

Collins

World English Dictionary

equivalence or equivalency (ɪˈkwɪvələns)

—n
1.	the state of being equivalent or interchangeable
2.	maths, logic
	a. the relationship between two statements, each of which implies the other
	b. Also called: biconditional the binary truth-function that takes the value true when both component sentences are true or when both are false, corresponding to English if and only if. Symbol: ≡ or ↔, as in --(p ∧ q) ≡ --p ∨ --q

equivalency or equivalency

—n

equivalency or equivalence (ˌɛkwɪˈveɪlənsɪ)

—n
	chem the state of having equal valencies

equivalence or equivalence

—n

equi'valent or equivalence

—*adj*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline

Word Origin & History

equivalence

1540s, from Fr. équivalence, from M.L. aequivalentia, from aequivalentem (see equivalent). Related: Equivalency (1530s).

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balance correlation Eötvös experiment Einstein's equivalency principle equivalence relation intuition

Matching Quote

"Simile and Metaphor differ only in degree of stylistic refinement. The Simile, in which a comparison is made directly between two objects, belongs to an earlier stage of literary expression; it is the deliberate elaboration of a correspondence, often pursued for its own sake. But a Metaphor is the swift illumination of an equivalence. Two images, or an idea and an image, stand equal and opposite; clash together and respond significantly, surprising the reader with a sudden light."

-Sir Herbert Read

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