litmus paper

1. 1.

   unsized paper treated with litmus for use as an acid-base indicator

   Broaderpaper

Questions about litmus paper

What does litmus paper mean?

litmus paper means "unsized paper treated with litmus for use as an acid-base indicator".

Is litmus paper a common word?

litmus paper is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.