aneroid barometer

aneroid barometerExpansion or contraction of the vacuum chamber, caused by a change in air pressure, forces the pointer to move.

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.

aneroid barometer

n (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

an′eroid barom′eter

n. a device for measuring atmospheric pressure, consisting of a chamber with a partial vacuum and an elastic cover and a pointer that registers compression of the cover by the air outside the chamber. [1840–50]

aneroid barometerExpansion or contraction of the vacuum chamber, caused by a change in air pressure, forces the pointer to move.

an·er·oid barometer

(ăn′ə-roid′) A barometer made up of a vacuum chamber covered by a thin elastic disk. 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.

Thesaurus

Noun

1.

aneroid barometer - a barometer that measures pressure without using fluidsaneroidaltimeter - an instrument that measures the height above ground; used in navigationbarometer - an instrument that measures atmospheric pressure

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