The area or topics a government, court or agency has the power to make decisions about.
Jurisdiction answers the question "who gets to decide this?": which court, which agency or which level of government. Plenty of legal fights are about jurisdiction before they're about the facts.
"The state court ruled the case was outside its jurisdiction."
Filed under government and law in the glossary, with every word used on How I Lean.
Nine questions, about three minutes, and you'll see where you lean.