in business
idiom
1
                    
                                          
              
          
                                                      : operating as a business                                      
              
                             
The hotel has been in business for over 150 years.
                                       Customer satisfaction is important if you want to stay in business.
                         
                
                    2
                    
                                informal 
                                  
              
          
                                                      : ready to begin doing or using something                                      
              
                             
Just plug in the computer and you're in business!
                                       He quickly changed the tire, and was back in business in 10 minutes.
                         
                
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  Merriam-Webster unabridged




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