magistracyEnglishOxford New American Dictionarymagistracy /ˈmajəstrəsē, ˈmædʒəstrəsi / ▸ noun (plural magistracies) the office or authority of a magistrate: he twice ran for a magistracy in his home town. ▪ (the magistracy) magistrates collectively: the problem is to persuade both their supporters and the judiciary and magistracy.