Noun: litmus test lit-mus test
- A test that relies on a single indicator
"her litmus test for good breeding is whether you split infinitives"
- A colouring material (obtained from lichens) that turns red in acid solutions and blue in alkaline solutions
"litmus test paper is a common pH indicator in chemistry labs";
- litmus
Derived forms: litmus tests
Type of: acid-base indicator, exam, examination, test
Part of: litmus paper
Encyclopedia: Litmus test