Advertisement - Continue reading below

Definition of "barometer" []

  • An instrument for measuring atmospheric pressure, used especially in weather forecasting. (noun)
  • Something that registers or responds to fluctuations; an indicator: Opinion polls serve as a barometer of the public mood. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "barometer" in a sentence
  • "Amphibians are what we call barometer species of our planet's health."
  • "The variation in the barometer is the surest sign."
  • "On Nov. 17, 1884, Bell's lab recorded the word "barometer" several times on a glass disc with a beam of light."