Jurisdiction
Middle English: from Old French jurediction, from Latin jurisdictio(n- ), from jus, jur- ‘law’ + dictio ‘saying’ (from dicere ‘say’).
wiktionary
From Latin iūrisdictiō.
etymonline
jurisdiction (n.)
early 14c., jurisdiccioun, jurediction, etc., "administration of justice," from Old French juridicion (13c., Modern French juridiction) and directly from Latin iurisdictionem (nominative iurisdictio) "administration of justice, jurisdiction," from phrase iuris dictio, genitive of ius "law, right" (see jurist) + dictio "a saying" (from PIE root *deik- "to show," also "pronounce solemnly").
Meaning "extent or range of administrative power, domain over which a legal or judicial authority extends" is from late 14c. Meaning "judicial authority, right of making and enforcing laws" is from early 15c. The form in English assimilated to Latin 16c. Related: Jurisdictional.
