1. a state of stupor or drowsiness.
  2. a state of stupor or greatly reduced activity produced by a drug.Compare nitrogen narcosis.


  1. unconsciousness induced by narcotics or general anaesthetics

n.1690s, “state of unconsciousness caused by a narcotic,” Modern Latin, from Greek narkosis, from narkoun “to benumb” (see narcotic (n.)). n. pl. nar•co•ses (-sēz)

  1. General and nonspecific reversible depression of neuronal excitability, produced by a physical or chemical agent, usually resulting in stupor rather than in anesthesia.

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