general anesthesia

chemically induced unconscious state in order to perform medical procedures (as opposed to local anesthesia where the patient remains conscious)

In modern medical practice, general anaesthesia (AmE: anesthesia) is a state of total unconsciousness resulting from general anaesthetic drugs. A variety of drugs are given to the patient that have different effects with the overall aim of ensuring unconsciousness, amnesia and analgesia. The anaesthetist (AmE: anesthesiologist) selects the optimal technique for any given patient and procedure.
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General anesthesia is the induction of a state of unconsciousness with the absence of pain sensation over the entire [more]General anesthesia - Community and Resources

Noun
1. a state of total unconsciousness resulting from anesthetic drugs (as for a major surgical operation)
(synonym) general anaesthesia
(hypernym) anesthesia, anaesthesia
(hyponym) inhalation anesthesia

[an-es-THEE-zha]
Drugs that cause loss of feeling or awareness and put the person to sleep.