prenyl
/ˈprɛnʌɪl/ /ˈprɛnɪl/ /ˈpriːnʌɪl/Chemistry
noun
A hydrocarbon radical or group C5H8, present in prenols and in polymers of isoprene; an isoprene residue. Usually attributive.
Origin
1930s; earliest use found in Chemical Abstracts. From German Prenyl from pren- (in Prenol) + -yl.