eth·​oxide | \eˈth+-\
plural -s

Definition of ethoxide 

: a binary compound of ethoxyl especially : a base formed from ethyl alcohol by replacement of the hydroxyl hydrogen with a metal aluminum ethoxide Al(OC2H5)3

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First Known Use of ethoxide

1852, in the meaning defined above

History and Etymology for ethoxide

ethoxyl + -ide

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The first known use of ethoxide was in 1852

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to enclose within walls

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