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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 barometric
  • He holds an altimeter, which provides preliminary readings of the distance below the surface by measuring barometric pressure.
  • Sudden and dramatic drops in barometric pressure are what produce the extremely high winds in tornadoes and hurricanes.
  • Opposite conditions-falling temperatures, decreasing moisture, and increasing barometric pressure-urge them south in the fall.
  • Tiny, ephemeral changes in temperature or barometric pressure can cause huge variations for which the models cannot account.
  • If you're interested, you can research the barometric formula for an example of how this works.
  • We have not always, however, in this effect of barometric pressure really great tidal rise and fall.
  • Manometry measures the barometric pressure inside the esophagus.
  • Rain and barometric pressure did not affect the findings.
  • Many of our best writers were doing the barometric thing that artists do.
  • But decreasing barometric pressure lowers the density of the air.
British Dictionary definitions for barometric


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 barometric

1802, from barometer + -ic. Barometrical is recorded from 1660s.



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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barometric 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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barometric 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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