duodecimvirate /ˌdjuːəʊdɛˈsɪmvɪɹət/ noun1 •A group of twelve people, especially (politics) a council of twelve men sharing office or rule, particularly such groups of magistrates in ancient Rome.Strabo seems to say, there were fronting these halls, (which Diodorus likewise seems to distinguish from the labyrinth, styling it the work of the Duodecimvirate) 27 other halls. — 1789