Ultonian UK /ʌlˈtəʊ.ni.ən/US /ʌlˈtoʊ.ni.ən/adjective 1noun 1forms 3 adjective1 •Of, relating to, or characteristic of Ulster.Pity dawn’d on savage faces, when for love of captive Crunn, / Macha, in the ransom-races, girt her gravid loins, to run / ’Gainst the fleet Ultonian horses; […] — 1864 noun1 •A native or inhabitant of Ulster.If the Scots failed to subdue the south thoroughly, they succeeded in crushing the Ultonians, and driving them ultimately into the southeastern corner of the province. — 1881 formsUltonians · more Ultonian · most Ultonian