anæsˈthetically,adv. [f. anæsthetic a. andn. + -al1 + -ly2.] As, or in the way of, an anæsthetic; so as to produce anæsthesia. 1847Sir J. Simpson in Mem. (1873) viii. 262 As one who knows..what operations were to the patients before æther or chloroform was employed anæsthetically.