The Collaborative International Dictionary
Ethylate
Ethylate \Eth"yl*ate\ ([e^]th"[i^]l*[asl]t), n. [From Ethyl.] (Chem.) A compound derived from ethyl alcohol by the replacement of the hydroxyl hydrogen, after the manner of a hydrate; an ethyl alcoholate; as, potassium ethylate, C2H5.O.K.
Ethylate
Ethylate \Eth"y*late\ ([e^]th"[i^]l*[asl]t), 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.
Wiktionary
ethylate
vb. (context organic chemistry English) To react with an ethyl compound so as to introduce one or more ethyl groups into a compound