Breadcrumb Home > Thesaurus > L Synonyms of litmus Find synonyms for: Noun 1. litmus, litmus test, acid-base indicator usage: 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 WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of litmus (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: calumny Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language