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Definition of big business noun from the Oxford Advanced Learner's Dictionary

big business

noun
 
/ˌbɪɡ ˈbɪznəs/
 
/ˌbɪɡ ˈbɪznəs/
[uncountable]
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  1. large companies that have a lot of power, considered as a group
    • There are strong links between politics and big business.
  2. something that has become important because people are willing to spend a lot of money on it
    • Health and fitness have become big business.
See big business in the Oxford Advanced American DictionarySee big business in the Oxford Learner's Dictionary of Academic English
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