c2h5

from The Collaborative International Dictionary of English v.0.48

Ethyl \Eth"yl\, n. [Ether + -yl.] (Chem.)
   A monatomic, hydrocarbon radical, {C2H5} of the paraffin
   series, forming the essential radical of ethane, and of
   common alcohol and ether.
   [1913 Webster]

   {Ethyl aldehyde}. (Chem.) See {Aldehyde}.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

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.
   [Webster 1913 Suppl.]

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