oc·tyl
| \ ˈäktᵊl \
plural -s
Definition of octyl
: an alkyl radical C8H17 derived from an octane: such as
a
: the normal radical CH3(CH2)6CH2−
b
: the radical CH3(CH2)3CH(C2H5)CH2− having a branched chain; 2-ethyl-hexyl
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Merriam-Webster unabridged
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