Definition of “barometer” - English Dictionary

“barometer” in British English

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barometernoun [ C ]

uk /bəˈrɒm.ɪ.tər/ us /bəˈrɑː.mə.t̬ɚ/

(Definition of “barometer” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“barometer” in American English

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barometernoun [ C ]

us /bəˈrɑm·ɪ·t̬ər/

earth science a device that measures air pressure which shows when the weather is likely to change

(Definition of “barometer” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“barometer” in Business English

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barometernoun [ C ]

uk /bəˈrɒmɪtər/ us

something that is a sign of how a particular situation is developing, or how people's opinions on a particular matter are changing:

The Philippine Stock Exchange composite index is a group of 30 companies that is the market's main barometer.
barometer for sth The sales of this retail chain are seen as a barometer for consumer confidence across the country.

(Definition of “barometer” from the Cambridge Business English Dictionary © Cambridge University Press)