reinvestverb [ I or T ]
also re-invest uk/ˌriːɪnˈvest/usSTOCK MARKET, FINANCEto put money that you receive from an investment back into that investment, or into another investment:
reinvest profits/proceeds/income Investors looking to build capital should reinvest the income from the fund.
reinvest dividends/capital gains
reinvest sth (back) into sth The owner selling his shares can reinvest the proceeds into other assets.