A person, divinity, or authoritative text which decides.
A Turing machine that halts regardless of its input.
An event or action which decides the outcome of a contested matter.
A counselor, confessor, or spiritual guide.
A device that displays graphical information concerning the targets of a weapons system in real time.
The common axis of symmetry of the molecules of a liquid crystal.
A member of a board of directors.
That which directs or orientates something.
One who directs; the person in charge of managing a department or directorate (e.g., director of engineering), project, or production (as in a show or film, e.g., film director).