domino theory dominos • domino whist · · · Info · Definitions · Characters · · domino theory · · Text Common · · Latin · · Scripts 13 · · Length 6 · · Syllables Definitions · · · (noun) the political theory that if one nation comes under communist control then neighboring nations will also come under communist control. Synonyms: domino theory. · · Noun Definition 1 Characters · · space U+0020 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079