Definition, Meaning & Synonyms
litmus-paper
noun
/ˈlɪt.məs ˈpeɪ.pər/
Definition
Litmus paper is a type of filter paper that has been treated with a dye from lichens and is used to test the acidity or alkalinity of a solution.
Examples
- The scientist used litmus paper to check if the solution was acidic.
- When dipped in lemon juice, the blue litmus paper turned red.
Meaning
It serves as an indicator to determine whether a solution is acidic (pH less than 7) or alkaline (pH greater than 7).
Synonyms
- pH indicator
- chemical indicator
