barometer Definition in the Cambridge English Dictionary
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Definition of “barometer” - English Dictionary

Definition of "barometer" - American English Dictionary

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barometernoun [C]

 us   /bəˈrɑm·ɪ·t̬ər/
earth science a ​device that ​measuresairpressure which ​shows when the ​weather is ​likely to ​change
(Definition of barometer from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "barometer" - British English Dictionary

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barometernoun [C]

uk   /bəˈrɒm.ɪ.tər/  us   /-ˈrɑː.mɪ.t̬ɚ/
a ​device that ​measuresairpressure and ​shows when the ​weather is ​likely to ​change something that can show how a ​particularsituation is ​developing, or how people's ​opinions on a ​particularmatter are ​changing: This ​survey is ​considered to be a ​reliable barometer ofpublicopinion.
barometric
adjective /ˌbær.əʊˈmet.rɪk/  us /ˌber.oʊ-/
(Definition of barometer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)

Definition of "barometer" - Business English Dictionary

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barometernoun [C]

uk   us   /bəˈrɒmɪtər/
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 ​compositeindex is a ​group of 30 ​companies that is the market's ​main barometer.barometer for sth The ​sales of this ​retailchain are seen as a barometer for ​consumerconfidence across the country.
(Definition of barometer from the Cambridge Business English Dictionary © Cambridge University Press)
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