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English definition of “expansion”

expansion

noun [C or U]     /ɪkˈspæn.ʃən/
B2 the increase of something in size, number, or importance: the rapid expansion of the software industry Expansion into new areas of research is possible. an expansion of industryBecoming biggerEnlarging and inflating
(Definition of expansion noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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