ISOPROPYL Meaning of ISOPROPYL in English [ ˌʌɪsəʊ'prəʊpʌɪl , -pɪl ]■ noun [as modifier ] Chemistry of or denoting the alkyl radical ‒CH(CH 3 ) 2 , derived from propane. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004