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Related to buy in: Management Buy In
buy in(to something)
1. Lit. to purchase shares of something; to buy a part of something the ownership of which is shared with other owners. I bought into a company that makes dog food. Sounds like a good company. I would like to buy in.
2. Fig. to agree with; to accept an idea as worthwhile. The committee liked my proposal and decided to buy into my plan. Do you think you can get the whole board to buy in?
See also: buy