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barometer
The definition of a barometer is a device that measures the pressure of the atmosphere as an aid to predicting weather.
(noun)A device that shows the pressure of the air is an example of a barometer.
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See barometer in Webster's New World College Dictionary
noun
- an instrument for measuring atmospheric pressure, esp. an aneroid barometer or an evacuated and graduated glass tube () in which a column of mercury rises or falls as the pressure of the atmosphere increases or decreases: barometers are used in forecasting changes in the weather or finding height above sea level
- anything that reflects or indicates change: the stock market is a barometer of business
Origin: baro- + -meter
Related Forms:
- barometric adjective or barometrical
- barometrically adverb
See barometer in American Heritage Dictionary 4
noun
- An instrument for measuring atmospheric pressure, used especially in weather forecasting.
- Something that registers or responds to fluctuations; an indicator: Opinion polls serve as a barometer of the public mood.
Related Forms:
- barˌo·metˈric (bărˌə-mĕtˈrĭk), barˌo·metˈri·cal adjective
- barˌo·metˈri·cal·ly adverb
- ba·romˈe·try noun
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