noun🔗ShareA dyestuff extracted from certain lichens, that changes color when exposed to pH levels greater than or less than certain critical levels."The science teacher used litmus paper to test if the liquid was an acid or a base, as the paper turned red in acids and blue in bases. "chemistrysubstancematerialcolorscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA simple test of acidity in a liquid using litmus, usually in the form of litmus paper."The science student used litmus paper to check if the liquid was an acid. "chemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA simple test of any attribute; a litmus test."The ability to stay calm under pressure is a litmus test for success in this demanding job. "attitudequalityChat with AIVocabulary GamePractice Reading
