litmus test
Noun

litmus test (plural litmus tests)

  1. (chemistry) A simple test for the acidity or alkalinity of a substance, using litmus paper.
  2. (figuratively, by extension) Any test which produces a decisive result by measuring a single indicator.
    • 1940, Allison Danzig, "Leading Elevens Face Stern Threats in Saturday's Games," New York Times, 2 Oct., p. 27,
      Temple, under its new coach, Ray Morrison, formerly of Vanderbilt, will be put to the blue litmus test Friday night when it takes on Georgetown.
    • 1998, "Baby-Boomer Bonding," Newsweek, 16 Feb.,
      For good reasons or bad, early membership of the currency union has become the litmus test of being a "good European."
    • 2004, Matthew Cooper, "[http://www.time.com/time/magazine/article/0,9171,995621,00.html Candidates In the Wings]," Time, 15 Nov.,
      He opposes a constitutional amendment to ban same-sex marriage—a litmus test for many social conservatives
  3. (figuratively, by extension, chiefly US, politics) A question asked of a potential candidate for high office, the answer to which determines whether the nominating official would proceed with the appointment or nomination.
Translations


This text is extracted from the Wiktionary and it is available under the CC BY-SA 3.0 license | Terms and conditions | Privacy policy 0.003
Offline English dictionary