Anesthesiology, called anaesthetics in UK English according to some sources but not according to others, is the medical speciality concerned with anesthesia and anesthetics.  Anesthesiology, called anaesthetics in UK English according to some sources but not according to others, is the medical speciality concerned with anesthesia and anesthetics.  Anesthesiology, called anaesthetics in UK English according to some sources but not according to others, is the medical speciality concerned with anesthesia and anesthetics.