aneroid barometer

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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.

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Compare mercury barometer.

Origin of aneroid barometer

First recorded in 1840–50

Words nearby aneroid barometer

anent, anepigraphic, anergy, aneroid, aneroid barograph, aneroid barometer, aneroid capsule, anes, anesthesia, anesthesimeter, anesthesiologist

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use aneroid barometer in a sentence

It was three miles to the bottom of the gully, and the aneroid barometer registered one thousand one hundred and ninety feet.
The Home of the Blizzard|Douglas Mawson
From observations made on the summit with a single aneroid barometer, it was estimated to be about 14,500 feet high.
Travels in Alaska|John Muir
In most countries it must be done by reading feet on an aneroid barometer, set with zero of level scale to 30 ins.
How to Observe in Archaeology|Various
As he took Mac's aneroid barometer out of his pocket, a sudden gust cut across his raw and bleeding cheek.
The Magnetic North|Elizabeth Robins (C. E. Raimond)

The principle of the aneroid barometer has been applied to the construction of barographs.
Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3|Various

British Dictionary definitions for aneroid barometer

aneroid barometer

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

Scientific definitions for aneroid barometer

aneroid barometer

[ 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.