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 preliminary stage of a competition.
One who qualifies for something, especially a contestant who qualifies for a stage in a competition.
A marker that qualifies or modifies another code element.
A word or phrase, such as an adjective or adverb, that describes or characterizes another word or phrase, such as a noun or verb; a modifier; that adds or subtracts attributes to another.