isoprene
noun /ˈaɪsəpriːn/
/ˈaɪsəpriːn/
[uncountable] (chemistry)- a liquid hydrocarbon obtained from petroleum that is used to make artificial rubber. Isoprene is also found in natural rubber.Word Originmid 19th cent.: apparently from iso- ‘equal’ + pr(opyl)ene.