Source : Webster's Revised Unabridged Dictionary (1913)

Etherize \E"ther*ize\, v. t. [imp. & p. p. {Etherized}; p. pr. &
   vb. n. {Etherizing}.] [Cf. F. ['e]th['e]riser.]
   1. To convert into ether.

   2. To render insensible by means of ether, as by inhalation;
      as, to etherize a patient.