تعريف litmus-paper في الإنجليزية الإنجليزية القاموس.
Paper containing a water-soluble mixture of different dyes extracted from certain lichens. The resulting piece of paper is used to test materials for acidity
An unsized white paper impregnated with litmus and used as a pH or acid-base indicator. paper containing litmus, used to test whether a chemical is an acid or an alkali