Noun | 1. | general anaesthesia - a state of total unconsciousness resulting from anesthetic drugs (as for a major surgical operation) anaesthesia, anesthesia - loss of bodily sensation with or without loss of consciousness inhalation anesthesia - general anesthesia achieved by administration of an inhalation anesthetic twilight sleep - a state of general anesthesia in which the person retains a slight degree of consciousness; can be induced by injection of scopolamine or morphine |