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private investment UK US noun [C or U]
► FINANCE money invested by companies, financial organizations, or other investors, rather than by a government: »
Research should be based on a partnership of public and private investment.
»a private investment company/firm/group
attract/encourage private investment »Up to $500 million will be used to attract private investment in energy-related economic development, including solar manufacturing and biofuels.
Financial and business terms. 2012.