FDSL Views 9 meanings found FDSL primarily refers to U.S. federal student loan programs, while also describing a computing layer for fuzzy databases and scholarly works on Slavic language description. Miscellaneous Formal Description of Slavic Languages Formal Description of Slavic Governmental Fixed Directory Subscriber List Academic & Science Federal Direct Student Loan Federal Direct Stafford Loan Computing Fuzzy Database Software Layer Fundación Dominicana de Software Libre Business Flight Data Services Limited Sports Fan District Softball League