Roma locuta est, causa finita est

Meanings:

• 1.

  Catholic ChurchWestern Europeinternationalformalhistoricalreligious
  • Literally, "Rome has spoken; the case is closed." Used to indicate that an authoritative decision issued by the Roman (typically papal or curial) authority is final and leaves no room for further dispute.
  • A formula signifying that, because a central authority has settled a matter, the issue is considered conclusively resolved.

• 2.

  internationalliteraryidiomatic
  • A proverbially used expression to convey that a determination by a dominant authority or institution is decisive and ends further discussion or appeal.