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equivalence
[ ih-kwiv-uh-luhns ee-kwuh-vey-luhns ]
noun
- 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 calledmaterial implication. the relation between two propositions such that the second is not false when the first is true.
- Also calledmaterial 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.
equivalence
/ ɪˈkwɪvələns /
noun
- the state of being equivalent or interchangeable
- maths logic
- the relationship between two statements, each of which implies the other
- Also calledbiconditional the binary truth-function that takes the valuetruewhen both component sentences are true or when both are false, corresponding to Englishif and only if. Symbol: ≡ or ↔, as in –(p∧q) ≡ –p∨ –q
Other Word Forms
- none·quiva·lencenoun
Word History and Origins
Origin ofequivalence1
Example Sentences
We must stop the false equivalence that there are “two sides” to slashing funds, programs and agencies approved by Congress.
He appears to find some equivalence between undocumented immigrants and “invading aliens.”
What’s galling is that Republicans, rather than simply condemning Trump, are drawing a false equivalence between his action and former President’s Biden’s last-minute preemptive pardon of his siblings and their spouses.
Not that I mean to imply any sort of qualitative or moral equivalence between “Saw” and this.
No equivalence is drawn the parent side, even though it's also true that a parent who refuses to make peace with an adult child runs the emotional risk of losing that relationship permanently.
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