DDL 1. ["A Digital System Design Language (DDL)", J.R. Duley, IEEE Trans on Computers c-17(9), pp. 850-861, Sep 1968]. 2. <language, games> An {adventure} language developed by M. Urban, C. Kostanick et al of the {UCLA} Computer Club. DDL was the forerunner of {ADL}. 3. {Data Definition Language}. 4. {Document Description Language}. 5. {Dynamic Data Exchange}. (Originally "Linking"). (1997-06-05)