ˈäkt ə l noun
( -s )
Etymology: International Scientific Vocabulary oct ane + -yl
: an alkyl radical C 8 H 17 derived from an octane: as
a. : the normal radical CH 3 (CH 2 ) 6 CH 2 −
b. : the radical CH 3 (CH 2 ) 3 CH(C 2 H 5 )CH 2 − having a branched chain; 2-ethyl-hexyl