To furnish with a subsidy; to purchase the assistance of by the payment of a subsidy; to aid or promote, as a private enterprise, with public money; as, to subsidize a steamship line.

secure the assistence of by granting a subsidy, as of nations or military forces

A term for aid. Federally subsidize mortgages typically have an interest rate lower than market because of government assistance. Temporary Buydowns are considered subsidized mortgages, because there is money placed in an escrow fund to supplement the regular payment for a certain period of time.

support through subsidies; "The arts in Europe are heavily subsidized"