Aneroid Barometer Definition

ănə-roid

noun

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.

American Heritage

A barometer with a needle connected by mechanical linkages and springs to a thin, hollow metal disk in which a partial vacuum is maintained: a change in atmospheric pressure changes the shape of the disk, thus moving the needle.

Webster's New World

A barometer in which variations in pressure are measured using a partially evacuated capsule whose sides move in and out.

Wiktionary

Synonyms: