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Economic and market data that represent an overall trend. The Dow Jones Industrial Average is an example of a stock market barometer.

Barometer Stock

A stock in a well-known or highly-regarded company in a given sector. The performance of a barometer stock is considered to be an indicator of the performance of its particular sector or industry. The term "barometer stock" is chiefly British; in the U.S., the primary term is bellwether stock.


An indicator of fluctuations. For example, the S&P 500 is a barometer for stock market movements. Likewise, long-term interest rates are a barometer of inflationary expectations.
References in periodicals archive ?
In the weeks preceding the bombing, German security authorities had rounded up a PELP-GC cell and found barometrically detonated bombs hidden in boombox radios--the type of device that was hidden in the luggage loaded aboard Pan Am 103 at Frankfurt International Airport.
Although her new life as a Navy wife is likely to be exhilarating and liberating in many ways, she will hardly be able to take a piano-an expensive, large, and barometrically temperamental instrument--with her when she accompanies Wentworth aboard ship.
I learned to forecast rain in this way from my grandmother, almost twelve hours ahead of time on the plains--a forecasting that remains with me still, although here in Ohio the barometrically imposed flip of leaves won't always signify rain with quite the certainty I came to expect in Kansas.