| Subject | English | Polish |
| chem. | chain extender | przedłużacz łańcucha |
| comp., MS | extender control | rozszerzenie formantu (In ASP.NET, a control that encapsulates functionality that is implemented in JavaScript and that defines behavior in the browser. Extender controls are associated with existing Web server controls to add the extender's behavior to that control. For example, an extender control can add a watermark to any TextBox control or drag-and-drop behavior to a variety of ASP.NET Web server controls) |
| radio | line extender | wzmacniacz kompensujący tłumienia linii przesyłowej |
| comp., MS | Media Center Extender | urządzenie Media Center Extender (A hardware device that, when connected to a TV, includes the ability to extend the Windows Media Center experience and media on that TV) |
| tel. | range extender | przedłużacz zasięgu linii abonenckiej |