Etymology
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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.

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Definitions of jurisdiction

jurisdiction (n.)
(law) the right and power to interpret and apply the law;
courts having jurisdiction in this district
Synonyms: legal power
jurisdiction (n.)
in law; the territory within which power can be exercised;
From wordnet.princeton.edu