Definition of justiciary
1 : the jurisdiction of a justiciar or of the High Court of Justiciary which consists of original and appellate jurisdiction in serious criminal cases and appellate jurisdiction from sheriff's decisions in civil matters in the small-debts court
2 [Medieval Latin justiciarius, justitiarius] : justiciar
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Origin and Etymology of justiciary
Middle English justiciarie, from Medieval Latin justiciaria, justitiaria, from Latin justitia justice + -aria -ary
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