Julio-Claudian UK /ˌd͡ʒuːl.iː.əʊˈklɔː.diː.ən/US /ˌd͡ʒul.i.oʊˈklɔ.di.ən/adjective 1noun 1forms 1 adjective1 •Of or relating to the Julio-Claudian dynasty, which ended with the death of Nero in the year 68 AD. noun1 •Someone from the Julio-Claudian dynasty. formsJulio-Claudians