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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 ?
The relief dampers can be under barometric control and also assisted with barometrically controlled variable speed relief fans.
Such diagrams are called 'isometric,' meaning 'measuring equally' (like the term 'isobars' in weather charts, showing lines of points where air pressure is barometrically equal).
They found barometrically detonated bombs hidden in Toshiba boom-box radios--the type of device hidden in luggage loaded on Pan Am 103 at Frankfurt International Airport before it took off for London and New York.