anesthesia

Definition / meaning of anesthesia

A loss of feeling or awareness caused by drugs or other substances. Anesthesia keeps patients from feeling pain during surgery or other procedures. Local anesthesia is a loss of feeling in one small area of the body. Regional anesthesia is a loss of feeling in a part of the body, such as an arm or leg. General anesthesia is a loss of feeling and a complete loss of awareness that feels like a very deep sleep.

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Find More About 'anesthesia'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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