Definition of "decider" in English

noun

1. (of a controversy, question, etc) A person, divinity, or authoritative text which decides.

   • This written and revealed will of God I said was the Judge and Decider of all Questions.
   • The god Adar, which, with its two oft-occurring idiographs Bar and Nin-ib, is preferably designated as the "Decider" (Entschneider).

2. (chiefly British, Australia, sports) An event or action which decides the outcome of a contested matter.

3. (computer science) A Turing machine that halts regardless of its input.