tractatorium

From tractō (“to discuss or debate, to manage, to transact”) +‎ -tōrium.

• (Classical) IPA^(key): /trak.taːˈtoː.ri.um/, [t̪räkt̪äːˈt̪oːriʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /trak.taˈto.ri.um/, [t̪räkt̪äˈt̪ɔːrium]

tractātōrium n (genitive tractātōriī or tractātōrī); second declension

1. a place where deliberations were held, causes tried
2. a place of business, session room

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

• “tractatorium”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• tractatorium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• tractatorium in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)