Third-Worldian noun 1adjective 1forms 2 noun1 •(rare) One who is from the Third World.Third Worldians, rich and poor, capitalists and Communists alike. — 1982 adjective1 •(rare) Synonym of Third-WorldishMy team had Charlie Mello's open stake truck, so we looked especially like Third Worldian migrant labourers. However, the scuba team had a van, and that's how the dog got killed. — 2004 formsThird-Worldians · third-worldians