litmus

litmus汉语翻译：
n. 石蕊
【化】石蕊
【医】石蕊英语解释：
名词 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同义词：litmus test

例句：

Litmus paper can be used as an indicator of the presence of acid in a solution.石蕊试纸可用以测试溶液是否含酸。

详细解释：
lit.mus
n.（名词）
A water-soluble blue powder derived from certain lichens that changes to red with increasing acidity and to blue with increasing basicity.
石蕊：取自地衣的一种可溶于水的蓝色粉末，可随酸性增大而变红，随碱度增大而变蓝
来源：
Middle English litmose
中古英语 litmose
[of Scandinavian origin] ; akin to Old Norse litmosi [dyer`s herbs]
[源于斯堪的纳维亚语] ；类似于 古斯堪的纳维亚语 litmosi [蓝靛]
litr [color, dye]
litr [着色、染色]
mosi [bog, moss]
mosi [沼泽，苔]