buna rubber buna • buncal · · · Info · Definitions · Synonyms · Characters · · buna rubber · · Text Common · · Latin · · Scripts 11 · · Length 4 · · Syllables Definitions · · · (noun) made by polymerizing butadiene. Synonyms: buna, buna rubber. · · Noun Definition 1 Synonyms · · · buna · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075