anesthesia (US) noun
or British anaesthesia /ˌænəsˈθiːʒə/ or British anaesthesia /ˌænəsˈθiːʒə/ Learner's definition of ANESTHESIA
[noncount] medical
: loss of feeling in a person's body or part of the body through the use of drugs麻醉；（因药物导致的）感觉缺乏，麻木 -
The patient was given an injection to induce anesthesia.这个病人接受了麻醉注射。
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patients who are under general anesthesia [=patients who have been given drugs that make them unconscious and unable to feel pain]全身麻醉的病人
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The doctor removed the mole while the patient was under local anesthesia. [=the patient had been given drugs that took away feeling in only the part of the body where the doctor worked]医生在病人局部麻醉的状态下去除了那个痣。