litmus test


noun

Chemistry. the use of litmus paper or solution to test the acidity or alkalinity of a solution.
a crucial and revealing test in which there is one decisive factor.

QUIZZES

QUIZ YOURSELF ON THESE WORDS FROM BROWN GIRL DREAMING!

Visualize yourself passing this quiz on words from Jacqueline Woodson’s exquisite verse novel “Brown Girl Dreaming,” and then take the quiz to prove you can do it! (Because you can.)
Question 1 of 10
What does “barren” mean?

Origin of litmus test

First recorded in 1955–60; so called from chemical tests in which litmus or litmus paper is an indicator
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for litmus test

litmus test

noun

a test to establish the acidity or alkalinity of a mixture
a critical indication of future success or failure
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for litmus test

litmus test

n.

A test for chemical acidity or basicity using litmus paper.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.