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expansion

noun [C or U]
 
 
/ɪkˈspæn.ʃən/

Definition

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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