third world third ventricle • third-year · · · Info · Definitions · Characters · · third world · · Text Common · · Latin · · Scripts 11 · · Length 2 · · Syllables Definitions · · · (noun) underdeveloped and developing countries of Asia and Africa and Latin America collectively. Synonyms: Third World. · · Noun Definition 1 Characters · · space U+0020 d latin small letter d U+0064 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 w latin small letter w U+0077