From Longman Dictionary of Contemporary Englishfixed-rateˈfixed-rate adjective [only before noun] a fixed-rate loan or mortgage is one in which the amount of interest you pay remains the same for a specific period of time → cappedFrom Longman Business Dictionaryfixed rateˌfixed ˈrateFINANCEBANKING an interest rate on a loan that is fixed at the time when the loan is taken out and does not change → rate