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alkoxyl

noun
alk·​ox·​yl | \alˈkäksə̇l\
plural -s

Definition of alkoxyl 

: an univalent radical RO (such as methoxyl) composed of an alkyl group united with oxygen

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First Known Use of alkoxyl

1891, in the meaning defined above

History and Etymology for alkoxyl

blend of alkyl and oxy-

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The first known use of alkoxyl was in 1891

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