| aneroid barometer n. A barometer in which variations of atmospheric pressure are indicated by the relative bulges of a thin elastic metal disk covering a partially evacuated chamber. |   Expansion or contraction of the vacuum chamber, caused by a change in air pressure, forces the pointer to move. |
aneroid barometer
n
(Earth Sciences / Physical Geography) 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
aneroid barometer ( n  -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. |  |
ThesaurusLegend: Synonyms Related Words Antonyms
aneroid barometer - a barometer that measures pressure without using fluids Translations
aneroid barometer
n → Aneroidbarometer nt
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