synthetic substance synthetic rubber • synthetic thinking · · · Info · Definitions · Synonyms · Characters · · synthetic substance · · Text Common · · Latin · · Scripts 19 · · Length 5 · · Syllables Definitions · · · (noun) a compound made artificially by chemical reactions. Synonyms: synthetic, synthetic substance. · · Noun Definition 1 Synonyms · · · synthetic · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079