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English definition of “occlusion”

occlusion

noun [C] (WEATHER)    /əˈkluː.ʒən/ (also occluded front) specialized
environment a situation in the weather when two masses of air meet, especially when a mass of cold air reaches warm air and pushes the warm air up off the Earth's surfaceWeather and climate - general words
(Definition of occlusion noun (WEATHER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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