foam rubber foam-painted • foam-white · · · Info · Definitions · Characters · · foam rubber · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) spongy rubber; made by introducing air bubbles before vulcanization and used for cushioning or upholstery. Synonyms: foam rubber. · · Noun Definition 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 f latin small letter f U+0066 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075