litmus test

litmus test
1. Chem. the use of litmus paper or solution to test the acidity or alkalinity of a solution.
2. a crucial and revealing test in which there is one decisive factor.
[1955-60; so called from chemical tests in which litmus or litmus paper is an indicator]

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Universalium. 2010.

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  • litmus test — litmus test, 1. (Chem.) A test to determine acidity or alkalinity, using litmus as an inddicator. [PJC] 2. Hence: (Fig.) A test for a single factor, which has only two outcomes, positive or negative; specifically: (Politics) the question of… …   The Collaborative International Dictionary of English

  • litmus test — litmus .test n [singular] 1.) one detail that is examined in order to help you make a decision about how suitable or acceptable someone or something is litmus test of/for ▪ The mayoral election is regarded as the litmus test for the integrity of… …   Dictionary of contemporary English

  • litmus test — n. 1. a test using litmus paper to determine whether a solution is an acid or a base 2. any test in which a single factor determines the finding [a litmus test for political candidates] …   English World dictionary

  • litmus test — litmus ,test noun count 1. ) an event, decision, etc. that provides a clear sign of what someone is really like or what their intentions are: The vote will be a litmus test for how serious the international community is about tackling… …   Usage of the words and phrases in modern English

  • litmus test — ► NOUN 1) a test using litmus. 2) a decisively indicative test …   English terms dictionary

  • litmus test — UK / US noun [countable] Word forms litmus test : singular litmus test plural litmus tests 1) an event, decision etc that provides a clear sign of what someone is really like or what their intentions are The vote will be a litmus test for how… …   English dictionary

  • litmus test — [[t]lɪ̱tməs test[/t]] litmus tests N COUNT: usu sing, usu N of/for n If you say that something is a litmus test of something such as the quality or success of a particular thing, you mean that it is an effective and definite way of proving it or… …   English dictionary

  • litmus test — noun a) A simple test for the acidity or alkalinity of a substance, using litmus paper. Temple, under its new coach, Ray Morrison, formerly of Vanderbilt, will be put to the blue litmus test Friday night when it takes on Georgetown. b) Any test… …   Wiktionary

  • litmus test — noun 1. a coloring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid base indicator • Syn: ↑litmus • Hypernyms: ↑acid base indicator • Substance Holonyms: ↑litmus paper 2.… …   Useful english dictionary

  • litmus test — noun 1》 Chemistry a test using litmus. 2》 a decisive test: they failed the litmus test of political maturity …   English new terms dictionary

  • litmus test — noun (singular) 1 something that makes it clear what someone s attitude, intentions etc are: The election will be an interesting litmus test on the greening of politics. 2 a test using litmus paper …   Longman dictionary of contemporary English

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