Definition: XTerm4, in the context of computer terminals, refers to a term that resembles an x (as in "x") but has an extra four characters at the end. It's usually associated with Linux systems, especially KDE-based environments or other text editing software like Vim and Atom. In a more specific context, it might be used to refer to an operating system called Xfce, which is a variant of KDE (KDE Foundation Edition). In this case, "Xterm4" refers to the x-terminal daemon running on Linux systems that runs alongside K Desktop Environment (KDE) or other text-based applications.