Type:System File

Acronym:Dynamic Link Library

Compiled library file containing a set of procedures and/or drivers that are referenced and executed by a program; allows multiple programs to access shared system functions through common libraries; may be dynamically linked into a program at runtime.

Many DLL files are provided with the Windows operating system, and others are included by Windows programs. They allow various program functions, such as communication with external devices and hard disk input and output. They may also be referenced by Mac cross-platform applications.

NOTE: Deleting or modifying the contents of a DLL file may cause errors within the program that references the file. For this reason, DLL files generally should not be opened or edited.