noun
-
a device for measuring atmospheric pressure, often specially calibrated for use as an altimeter, consisting of a box or chamber partially exhausted of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air.
aneroid barometer
British
noun
-
a device for measuring atmospheric pressure without the use of fluids. It consists of a partially evacuated metal chamber, the thin corrugated lid of which is displaced by variations in the external air pressure. This displacement is magnified by levers and made to operate a pointer
"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
aneroid barometer
Scientific
/ ăn′ə-roid′ /
-
A barometer consisting of a thin elastic disk covering a chamber that contains a partial vacuum. High atmospheric pressure pushes against the disk and causes it to bulge inward, while low pressure does not push as hard, allowing the disk to bulge outward. An aneroid barometer is smaller and more portable than a mercury barometer and, when used with a barograph, can record up to a week's worth of data. Aneroid barometers are used extensively in aviation as part of altimeters.
Etymology
First recorded in 1840–50
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any
opinions expressed do not reflect the views of Dictionary.com.
Trekking to a mountain top, he used an aneroid barometer to help him calculate its height.
From
BBC
• Nov. 13, 2013
The familiar aneroid barometer furnishes a hint for another convenient form of small steam-engine.
From
Twentieth Century Inventions
A Forecast
by Sutherland, George
It should be understood that the aneroid barometer is not an independent instrument; it is merely a device for representing the movements of the mercurial barometer.
From
Scientific American, Volume 40, No. 13, March 29, 1879
A Weekly Journal of Practical Information, Art, Science,
Mechanics, Chemistry, and Manufactures
by Various
The atmospheric pressure by the aneroid barometer was at 29.83.
From
My Attainment of the Pole
by Cook, Frederick A.
To compare the readings of an aneroid barometer with those of a mercurial barometer, up to five miles.
From
Up in the Clouds
Balloon Voyages
by Ballantyne, R. M. (Robert Michael)
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.