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English definition of “barometer”

barometer

noun [C] uk   /bəˈrɒm.ɪ.tər/ us    /-ˈrɑː.mɪ.t̬ɚ/
a device that measures air pressure and shows when the weather is likely to changeWeather and climate - general words something that can show how a particular situation is developing, or how people's opinions on a particular matter are changing: This survey is considered to be a reliable barometer of public opinion.Showing and demonstrating
(Definition of barometer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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