ISOPRENE Meaning of ISOPRENE in English [ 'ʌɪsə(ʊ)pri:n ]■ noun Chemistry a volatile liquid hydrocarbon whose molecule forms the basic structural unit of rubber.OriginC19: appar. from iso- + pr(opyl)ene . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004