Acronym for Dynamic Data Exchange. An interprocess communication method featured in Microsoft Windows and OS/2. DDE allows two or more programs that are running simultaneously to exchange data and commands. In Windows 3.1, DDE was largely supplanted by OLE, which is an extension of DDE. In Windows 95 and Windows NT, OLE and ActiveX are more commonly used. See also ActiveX, interprocess communication, OLE.
In computing, the abbreviation for dynamic data exchange, a form of communication between processes used in Microsoft Windows.

A persistent organochlorine C15H8Cl4 that is produced by the metabolic breakdown of DDT.