| 释义 |
Definition of litmus in English: litmusnoun ˈlɪtməsˈlɪtməs mass nounA dye obtained from certain lichens that is red under acid conditions and blue under alkaline conditions. Example sentencesExamples - During the 1660s, Robert Boyle discovered that certain plant extracts, such as litmus, can be used to distinguish acids from bases.
- In the presence of a basic solution, litmus will lose hydronium ions and turn blue.
Origin Middle English: from Old Norse lit-mosi, from litr 'dye' + mosi 'moss'. Definition of litmus in US English: litmusnounˈlɪtməsˈlitməs A dye obtained from certain lichens that is red under acid conditions and blue under alkaline conditions. Example sentencesExamples - In the presence of a basic solution, litmus will lose hydronium ions and turn blue.
- During the 1660s, Robert Boyle discovered that certain plant extracts, such as litmus, can be used to distinguish acids from bases.
Origin Middle English: from Old Norse lit-mosi, from litr ‘dye’ + mosi ‘moss’. |