Definitions for "Temporary File"
A file that is created by a running application to store temporary information needed for the program. These temporary files should be removed when the Application closes, however sometimes they aren't and have to be removed manually. They often have a .TMP extension.
a file opened by a program or an operating system to store information whilst it is being worked on
a file that is created by the program, used for some purpose during program execution, and then deleted before the program terminates