| Subject | English | Finnish |
| comp., MS | Extensible Firmware Interface | laajennettava laitteisto-ohjelmiston liittymä (A type of interface between a computer, firmware, hardware, and the operating system. EFI defines a new partition style called GUID partition table (GPT). EFI serves the same purpose as the basic input/output system (BIOS) found in most x86-based computers) |
| comp., MS | Extensible HTML | XHTML (A markup language that extends HTML and reformulates it as XML) |
| industr., construct. | extensible kraft paper | venyvä voimapaperi |
| IT | Extensible Markup Language | XML-kieli |
| comp., MS | extensible rights markup language | XrML-kieli (A proposed standard digital rights management (DRM) markup language which enables users to specify rights and conditions associated with resources, such as digital content or Web services) |
| mech.eng. | seal with extensible sleeve | sulkusyötin |
| mech.eng. | seal with extensible sleeve | kalvoventtiili |