sphere of influence sphere geometry • sphere tracks · · · Info · Definitions · Synonyms · Characters · · sphere of influence · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) the geographical area in which one nation is very influential. Synonyms: sphere, sphere of influence. · · Noun Definition 1 Synonyms · · · sphere · · Synonym 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 f latin small letter f U+0066 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075