magistracy UK /ˈmæd͡ʒɪstɹəsi/US /ˈmæd͡ʒəstɹəsi/ noun2 •The dignity or office of a magistrate.The actual amount paid was £6,483 8s, and the Auditor-General's report shows that last year this Department contributed a larger amount of revenue than any other Magistracy. — 1901 •The collective body of magistrates. formsmagistracies