A terminal is a device or software application that allows users to interact with a computer system. It provides a command-line interface where users can input text commands to perform various tasks, such as managing files or running programs. Terminals are commonly used in operating systems like Linux and macOS. In addition to physical devices, terminals can also refer to remote access tools that connect users to servers or cloud services. This enables users to execute commands and manage resources from different locations. Popular terminal applications include Terminal on macOS and Command Prompt on Windows.