ba·rom·e·ter

[buh-rom-i-ter]
noun
1.
Meteorology. any instrument that measures atmospheric pressure. Compare aneroid barometer, mercury barometer.
2.
anything that indicates changes.

Origin:
1655–65; baro- + -meter

bar·o·met·ric [bar-uh-me-trik] , bar·o·met·ri·cal, adjective
bar·o·met·ri·cal·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
barometer (bəˈrɒmɪtə) [Click for IPA pronunciation guide]
 
n
1.  an instrument for measuring atmospheric pressure, usually to determine altitude or weather changes
2.  anything that shows change or impending change: the barometer of social change
 
barometric
 
adj
 
baro'metrical
 
adj
 
baro'metrically
 
adv
 
ba'rometry
 
n

00:10
Barometric is always a great word to know.
So is bezoar. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
barometer (bəˈrɒmɪtə) [Click for IPA pronunciation guide]
 
n
1.  an instrument for measuring atmospheric pressure, usually to determine altitude or weather changes
2.  anything that shows change or impending change: the barometer of social change
 
barometric
 
adj
 
baro'metrical
 
adj
 
baro'metrically
 
adv
 
ba'rometry
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

barometer
1660s, from Gk. baros "weight" (from barys "heavy;" see grave (adj.)) + metron "measure" (see meter (2)). Probably coined (and certainly popularized) by English scientist Robert Boyle (1627-1691).

barometric
1802, from barometer.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
barometer   (bə-rŏm'ĭ-tər)  Pronunciation Key 
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.
Cite This Source
American Heritage
Cultural Dictionary

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.
Cite This Source
Example sentences
Rain and barometric pressure did not affect the findings.
Sensors were programmed to record date and time, temperature, and barometric or
  water pressure.
Barometric pressure started to rise across the region.
If you're interested, you can research the barometric formula for an example of
  how this works.
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