installed

Installed is the past participle and adjective of the verb install. It indicates that something has been placed in position or set up for use. The action can refer to software, hardware, or physical equipment, as well as services or systems that have been configured and made operational. The term is commonly used in technology to indicate readiness, for example, that a program or application is installed on a device or that software is installed via a package manager. It can also refer to furniture, fixtures, or machinery that have been fitted or commissioned.

In computing, installation generally involves copying files, creating or updating configuration, and integrating software with the host system. Installation may require a license key, dependency checks, and post-install configuration such as updates, user accounts, or services startup. For hardware, installation includes mounting, wiring, and verification of proper operation. In regulated industries, installation often requires documentation, validation, and certification by qualified personnel to meet safety, security, or data integrity standards.

The term’s usage implies completion, not merely initiation: installed contrasts with installing and uninstalled. In software packaging, installed software may be tracked by system registries or package managers, enabling maintenance, updates, and uninstallation processes. Overall, installed conveys that a component, system, or service is ready for use in its intended environment.