# material equivalence

### noun Logic.

## Words nearby material equivalence

materia alba, materia medica, material, material cause, material culture, material equivalence, material implication, material mode, materialism, materialist, materialistic

## Definition for material-equivalence (2 of 2)

equivalence

[ ih-kwiv-uh-luh ns or for 3, ee-kwuh-vey-luh ns ]SHOW IPA

/ ɪˈkwɪv ə ləns or for 3, ˌi kwəˈveɪ ləns /PHONETIC RESPELLING

### 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.

## Origin of equivalence

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

## OTHER WORDS FROM equivalence

non·e·quiv·a·lence, nounDictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

The X In Xmas Is Really About Jesus Christ

Modern Ways To Express Your Love And Affection

“Compliment” vs. “Complement”: How To Pick The Right Word

Empathy vs. Sympathy: Which Word To Use And When

Think Shrievalty’s Dead? Find Out With This Word Of The Day Quiz

This Word Advent Calendar Brings Kids All The Holiday Cheer

## British Dictionary definitions for material-equivalence

equivalence

### equivalency

/ (ɪˈkwɪvələns) /

### noun

the state of being equivalent or interchangeable

maths logic

- the relationship between two statements, each of which implies the other
- 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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012