English Explanatory Dictionary

litmus paper

English dictionary entry

Meanings

noun
  1. paper containing a water-soluble pH indicator composed of a mixture of different dyes extracted from certain lichens. The resulting piece of paper is used to test materials for acidity, turning red when acidic and blue when alkaline.

Pronunciation

LL-Q1860 (eng)-Vealhurl-litmus paper.wav

Word forms

litmus paper litmus papers
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