1908, from anesthesia + -ology.
Anesthesiology. This is the new term adopted by the University of Illinois defining "the science that treats of the means and methods of producing in man or animal various degrees of insensibility with or without hypnosis." [Medical Herald, January, 1912]
anemone
anencephalic
anent
anesthesia
anesthesiologist
anesthesiology
anesthetic
anesthetist
anesthetize
aneuploidy
aneurism