Oxford Dictionary English

    big business

    noun
    noun
    BrE BrE//ˌbɪɡ ˈbɪznəs//
    ; NAmE NAmE//ˌbɪɡ ˈbɪznəs//
    [uncountable]
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  1. 1large companies that have a lot of power, considered as a group links between politics and big business
  2. 2something 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 Learner's Dictionary of Academic EnglishSee big business in the Oxford Advanced American Dictionary
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