Definition of expansionism noun from the Oxford Advanced American Dictionary

  

expansionism

 noun
noun
NAmE//ɪkˈspænʃəˌnɪzəm//
 
[uncountable](sometimes disapproving)
 
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the belief in and process of increasing the size and importance of something, especially in a country or a business the economic expansionism of America military/territorial expansionism
expansionist
 
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NAmE//ɪkˈspænʃənɪst//
 
adjective expansionist policies
expansionist
 
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noun He was a ruthless expansionist.
See the Oxford Advanced Learner's Dictionary entry: expansionism