definition of litmus
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- Definition of litmus. 1  1 : a coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator. 2  2 : the critical factor in a litmus test; also : litmus test.
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litmus test litmus test Has Scientific Origins. It was in the 14th century that scientists discovered that litmus, a mixture of colored organic compounds obtained from lichen, turns red in acid solutions and blue in alkaline solutions and, thus, can be used as an acid-base indicator. Six centuries later, people began using litmus test figuratively.
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litmus litmus paper absorbent paper impregnated with a solution of litmus, dried and cut into strips. It is used to indicate the acidity or alkalinity of solutions. If dipped into alkaline solution it remains blue; acid solution turns it red. It is used to test urine and other body fluids; it has a pH range of 4.5 to 8.3.
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thymus thymus. a primary lymphoid organ lying in the cranial mediastinum or in the neck or throat, (depending on the species), which reaches its maximum development during puberty and continues to play an immunological role throughout life, even though its function declines with age.
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- 1. 1  Chemistry. a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base.
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media Definition of media. plural. mediae. play \-dē-ˌē\. 1 [Late Latin, from Latin, feminine of medius; from the voiced stops' being regarded as intermediate between the tenues and the aspirates] : a voiced (see voiced 2) stop (see 2stop 1b)
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Meaning of âlitmus testâ in the English Dictionary litmus test noun [ C ] (CHEMICAL TEST) › chemistry a test of a chemical substance using paper treated with litmus, which tells whether a substance is acid or alkali. litmus test noun [ C ] (OPINION) › an opinion or action that is thought to show more general opinions or likely future actions: Analysts say the election is a litmus test for democracy in the region. (Definition of “litmus test” from the Cambridge Academic Content Dictionary © Cambridge University Press)
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litmus test 1. 1  Chemistry. 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. 3  a test to establish the acidity or alkalinity of a mixture.  a critical indication of future success or failure.
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- We can say the following about litmus: 1  Blue litmus is used to test for acids: acids turn blue litmus red. Bases and neutral substances do not change the colour of blue litmus. 2  Red litmus is used to test for bases bases turn red litmus blue. Acids and neutral substances do not change the colour of red litmus.
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- a: a substance (as litmus) used to show visually (as by change of color) the condition of a solution with respect to the presence of a particular material (as a free acid or alkali) b: tracer 4b. 3.
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Grand Canyon Suite Grand Canyon Suite. The Grand Canyon Suite is a suite for orchestra by Ferde Grofé, composed between 1929 and 1931. It was initially titled Five Pictures of the Grand Canyon. It consists of five movements, each an evocation in tone of a particular scene typical of the Grand Canyon.
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What Is Litmus Paper? Understand the Litmus Test Paper that has changed from blue to red can be reused as red litmus paper. Limitations of the Litmus Test The litmus test is quick and simple, but it suffers a few limitations.
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- Definition of THYMUS. : a glandular structure of largely lymphoid tissue that functions especially in the development of the body's immune system, is present in the young of most vertebrates typically in the upper anterior chest or at the base of the neck, and tends to atrophy in the adult.See thymus defined for kids. ADVERTISEMENT. a glandular structure of largely lymphoid tissue that functions especially in the development of the body's immune system, is present in the young of most vertebrates typically in the upper anterior chest or at the base of the neck, and tends to atrophy in the adult. See thymus defined for kids. ADVERTISEMENT.
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- How simple indicators work Indicators as weak acids Litmus Litmus is a weak acid. It has a seriously complicated molecule which we will simplify to HLit. The H is the proton which can be given away to something else. The Lit is the rest of the weak acid molecule.
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test 1 a chemical reaction or physical procedure for testing a substance, material, etc. 2  a chemical reagent used in such a procedure: litmus is a test for acids.  the result of the procedure or the evidence gained from it: the test for alcohol was positive.
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What Is Litmus Paper? Understand the Litmus Test The blue dye has been extracted from lichens since the 16th century. The word litmus comes from the old Norse word for to dye or color. While all litmus paper acts as pH paper, the converse is untrue. It's incorrect to refer to all pH paper as litmus paper. Litmus Test
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litmus litmus - 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. litmus test. acid-base indicator - an indicator that changes color on going from acidic to basic solutions.
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ignis fatuus Definition of ignis fatuus plural ignes fatui play \ ˈig-ˌnēz-ˈfa-chə-ˌwī \ 1: a light that sometimes appears in the night over marshy ground and is often attributable to the combustion of gas from decomposed organic matter
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litmus Medical Definition of litmus. : a coloring matter from lichens that turns red in acid solutions and blue in alkaline solutions and is used as an acid-base indicator.
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litmus test Definition of litmus test for English Language Learners. : something (such as an opinion about a political or moral issue) that is used to make a judgment about whether someone or something is acceptable.
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Definition of 'litmus test' Definition of 'litmus test'. litmus test (lɪtməs tɛst ) If you say that something is a litmus test of something, you mean that it is an effective and definite way of proving it or measuring it. Ending the fighting must be the absolute priority, the litmus test of the agreement's validity. The success of wind power represents a litmus test for renewable energy.
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What Is a Litmus test? 1 Blue litmus paper: It is used to identify acids like sulphuric acid, nitric acid. It changes color from blue to red to indicate the presence of aids. It is made by the treatment of plain paper with lichen blue dye.  Purple or neutral litmus paper: It can identify both acids and bases.
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- Definition of PAX. 1. : a tablet decorated with a sacred figure (as of Christ) and sometimes ceremonially kissed by participants at mass.2. : the kiss of peace in the Mass.3.. : a tablet decorated with a sacred figure (as of Christ) and sometimes ceremonially kissed by participants at mass. 2. : the kiss of peace in the Mass. 3.
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test 2. litmus test-a test that relies on a single indicator; her litmus test for good breeding is whether you split infinitives. exam, examination, test-a set of questions or exercises evaluating skill or knowledge; when the test was stolen the professor had to make a new set of questions.
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Meaning of âlitmus testâ in the English Dictionary › a test to find out if a substance is acid or alkaline. › [ usually singular ] someone's decision or opinion about something that suggests what they think about a wider range of related things: The president's policy on abortion is regarded as a litmus test of his views on women's rights.
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Litmus. Litmus is the sixth episode of the reimagined Battlestar Galactica television series. In the episode, after a Cylon suicide bomber gains access to Galactica, an independent tribunal is appointed to investigate.