| Subject | English | Dutch |
| transp., mater.sc. | definition file | specificatiedossier |
| comp., MS | form definition file | formulierdefinitiebestand (An XML file with an .xsf extension that contains information about all other files and components used within a form, including user interface customizations, XML Schemas, views, business logic, events, and deployment settings) |
| comp., MS | Office compatibility definition file | definitiebestand voor Office-compatibiliteit (A file that stores information about compatibility issues and workarounds and makes it available to the Office Telemetry Log and Office Telemetry Dashboard) |
| comp., MS | package definition file | Package Definition File (An ASCII text file that contains predefined software distribution objects, such as programs and packages to be used for software deployment) |
| comp., MS | service definition file | servicedefinitiebestand (The file that determines the service model, such as the roles that comprise a service, optional local storage resources, configuration settings, and certificates for SSL endpoints) |
| IT, el. | shelf definition file | celdefinitiefile |