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English definition of “isobar”

isobar

noun [C]     /ˈaɪ.sə.bɑːr/ US  /-soʊ.bɑːr/ specialized
a line drawn on a weather map joining all the places that have the same air pressureMaps and map-makingWeather and climate - general words
(Definition of isobar noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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