isononylWiktionary 原文英美构词拆解isoiso-前缀nonylnonyl词干iso-Same, identical. · Equal; equivalent.词源说明From iso- + nonyl.释义名词noun1(organic chemistry, especially in combination) Any of several branched-chain isomers of the nonyl radical, but especially 3,5,5-trimethyl pentyl同族词派生词 1diisononyl