From di- + isobutyl. diisobutyl (uncountable) (organic chemistry, in combination) Two isobutyl groups in a molecule...
digalactose digalactosyl digeranyl diglycosyl diguanosine diheptyl dihexyl diisobutyl diisodecyl diisononyl dilactyl dilauroyl dilauryl dimethylene dimyristoyl...