Masuüstü

Masuüstü is not a standard Turkish spelling; the correct term is masaüstü, a compound of masa (table) and üstü (upper surface) that denotes things designed to be used on a desk or on a computer. The form masuüstü may appear as a misspelling or typographic error and is generally considered nonstandard. The standard spellings are masaüstü (together) and masa üstü (separate).

In Turkish, masaüstü is used across several domains. In computing, masaüstü bilgisayar means a desktop computer, contrasted with dizüstü bilgisayar (laptop) and taşınabilir cihazlar (portable devices). Masaüstü uygulamaları refers to software designed for desktop environments, as opposed to mobile apps. Masaüstü ortamı denotes the desktop environment of an operating system, such as GNOME or KDE in Linux, or the Windows/macOS desktop.

Outside computing, masaüstü describes surfaces or items intended for use on a desk, including desk organizers, lamps, and workspaces. The term emphasizes a designation for stationary, desk-based use rather than handheld or portable contexts.

Summary: masuüstü is a nonstandard variant of masaüstü. The established Turkish term masaüstü covers both the abstract concept of a desk-based environment and concrete applications in computing and desk-related contexts.