meaning of litmus
1. A dyestuff extracted from certain lichens (Roccella tinctoria, Lecanora tartarea, etc. ), as a blue amorphous mass which consists of a compound of the alkaline carbonates with certain coloring matters related to orcin and orcein.
2. a coloring material obtained from lichens that turns red in acid solutions and blue in alkaline solutions; used as a very rough acid-base indicator
Related Words
litmus | litmus paper | litmus test |
