noun. a barometer that measures pressure without using fluids.
1. Adjective Remove the back case of the barometer with the screwdriver; inside of it, there will be one or more aneroid cells; these will look like coins or flat cylinders. 2. Noun, singular or mass It consists of a small, flexible metal box called an aneroid capsule, which is made from an alloy of beryllium and copper. 3. Verb, base form As compared to aneroid barometers, mercury barometers are relatively simple, although accurate.