| Subject | English | Japanese |
| comp., MS | extensibility application | 機能拡張アプリケーション (An external software application that adds a new service or feature to a program or environment) |
| construct. | ultra-high extensibility | 高伸長性 (こう・しんちょう・せい) |
| comp., MS | Windows extensibility points | Windows 拡張ポイント (A mechanism that an app can use to interact with the system or with other apps. You must declare extensibility points in the package manifest) |