Capable of operating without external control or intervention. / Done out of habit or without conscious thought. / Necessary, inevitable, prescribed by logic, law, etc.

Initialism of Zollinger-Ellison syndrome.

The act or process of resignifying, or giving a new meaning to something.

(science fiction) A biological organism that has been created and designed by artificial means. / A person who performs robot-like tasks, or performs tasks in place of a robot.