etherise

/EH1 TH ER0 IY1 S/
verb
  1. 1

    To convert into ether.

  2. 2

    To render insensible by means of ether, as by inhalation.

    โ€œto etherize a patientโ€

Source: https://en.wiktionary.org/wiki/etherise, https://en.wiktionary.org/wiki/etherize