Lithuanian UK /ˌlɪθ.juˈeɪ.ni.ən/US /ˌlɪθ.uˈeɪ.ni.ən/noun 2adjective 1forms 3 noun2 •A person living in or coming from Lithuania. •The main language of Lithuania. adjective1 •Of or relating to Lithuania. formsLithuanians · more Lithuanian · most Lithuanian