in business meaning

1. Working, esp in commerce
2. Able to proceed

[American slang]
operating; equipped or ready to operate.
   We're in business now, and things are running smoothly.
   Now it works. Now we're in business.

Examples

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1. he got a good start in business.
2. i know him otherwise than in business.
3. i'm majoring in business administration in college.
4. her father set her up in business.
5. he did his work in business way.