A "Superuser" is a term used in computing to describe a user who has elevated privileges and access rights on a system. This allows them to perform advanced tasks that regular users cannot, such as installing software, changing system settings, and managing user accounts. Superusers are often responsible for maintaining system security and ensuring that everything runs smoothly. In many operating systems, such as Linux and Windows, the superuser account is often referred to as root or Administrator. These accounts are crucial for system administration and are typically used by IT professionals or system administrators to manage and configure systems effectively.