ejected

Ejected is the past participle of eject and is used as an adjective to describe something that has been expelled or driven out from a place, container, system, or situation. It applies to objects, substances, or people that have been removed from their normal position or environment.

In physical sciences and engineering, ejection refers to the process of expelling material due to pressure, thermal expansion, explosive force, or a chemical reaction. Examples include gas or liquid expelled from a vessel or nozzle, and solid particles discharged by a mechanical device. The term also appears in reference to ejecta produced by impacts or explosions.

In astronomy and space science, ejection describes the removal of matter from astronomical objects. This includes material ejected from stars during stellar winds, novae, or supernovae, as well as gravitational ejection of bodies from a planetary system, such as rogue planets or hypervelocity stars. Ejection can also describe fast-moving jets of material from young stars or active galactic nuclei.

In aviation and military technology, ejection is associated with systems designed to remove a person or object from a vehicle in an emergency. The most common example is an ejection seat that propels a pilot or crew member clear of an aircraft. Ejection can also refer to the jettison or separation of components, such as payloads or spent stages.

In sports and physiology, the term is used for disciplinary removals from competition, where a player or coach is ejected from a game. In physiology, to eject means to expel content from a chamber, such as the heart ejecting blood during systole. This usage describes movements of fluids or other substances within a biological system.