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[buh-rom-i-ter] /bəˈrɒm ɪ tər/
Meteorology. any instrument that measures atmospheric pressure.
anything that indicates changes.
Origin of barometer
1655-65; baro- + -meter
Related forms
[bar-uh-me-trik] /ˌbær əˈmɛ trɪk/ (Show IPA),
barometrical, adjective
barometrically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for barometer
  • Further explain the tools by telling students that a barometer measures the pressure of the atmosphere.
  • Type of barometer used to report atmospheric pressure.
  • The direct reading from a barometer is the station pressure.
  • By definition, a barometer measures atmospheric pressures.
  • The instrument on the left is a mercurial barometer.
  • Radiosondes measure temperature with a thermometer, humidity with a hygrometer, and air pressure with a barometer.
  • He ducked below for a reading of the barometer.
  • He's invaluable on the set because he has a great barometer for what's not funny or not ringing true.
  • He was an arch-rebel in a rebellious generation, the intellectual barometer of a world of stormy speculation and great endeavour.
  • You've said that design is a barometer gauge of what's happening in our society.
British Dictionary definitions for barometer


an instrument for measuring atmospheric pressure, usually to determine altitude or weather changes
anything that shows change or impending change: the barometer of social change
Derived Forms
barometric (ˌbærəˈmɛtrɪk), barometrical, adjective
barometrically, adverb
barometry, noun
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
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Word Origin and History for barometer

1660s, from Greek baros "weight" (from barys "heavy;" see grave (adj.)) + -meter. Probably coined (and certainly popularized) by English scientist Robert Boyle (1627-1691).

Online Etymology Dictionary, © 2010 Douglas Harper
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barometer in Science
An instrument for measuring atmospheric pressure. Barometers are used in determining height above sea level and in forecasting the weather. The two primary types of barometers are the aneroid and the mercury barometer.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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barometer in Culture

barometer definition

An instrument that measures atmospheric pressure.

Note: In general, when the barometer falls in response to a drop in pressure, bad weather is approaching; when the barometer rises because of an increase in pressure, good weather will follow.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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