Source : Webster's Revised Unabridged Dictionary (1913)

Ethylate \Eth"y*late\, v. t. [imp. & p. p. {Ethylated}; p. pr. &
   vb. n. {Ethylating}.] [From {Ethyl}.] (Chem.)
   To treat in such a way as to cause the introduction of one or
   more ethyl groups, {C2H5}; as, to ethylate alcohol.