| ̷ ̷ ̷ ̷+...- noun
Etymology: isooctyl from is- + octyl
: an octyl alcohol of branched-chain structure or a mixture of such alcohols ; especially : a mixture of isomeric primary alcohols C 7 H 15 CH 2 OH obtained by reaction of heptylenes with carbon monoxide and hydrogen and used especially in synthesis (as of plasticizers) — not used scientifically