stare decisis

noun | \ ˈster-ē-di-ˈsī-sis, ˈstär-ē-; ˈstä-rā-dā-ˈkē-sēs \ | sta·re de·ci·sis

1. : the doctrine under which courts adhere to precedent on questions of law in order to insure certainty, consistency, and stability in the administration of justice with departure from precedent permitted for compelling reasons (as to prevent the perpetuation of injustice)