Definition of narcosis in US English:

narcosis

noun

Medicine
  • A state of stupor, drowsiness, or unconsciousness produced by drugs.

    • ‘Avoid alcohol or drugs before diving, as this increases the effects of narcosis.’
    • ‘Specifically, they are compounds that produce narcosis or general anesthesia and relief from pain or analgesia.’
    • ‘Prolonged narcosis was introduced in the 1920s.’
    • ‘Once you begin on the slippery slope of hypothermia, secondary problems such as narcosis and decompression sickness begin to increase drastically.’
    • ‘One possibility is that CO2 narcosis impaired cognitive function.’
    lethargy, torpidity, sluggishness, inertia, inertness, inactivity, inaction, slowness, lifelessness, dullness, heaviness, listlessness, languor, languidness, stagnation, laziness, idleness, indolence, shiftlessness, sloth, slothfulness, apathy, accidie, passivity, weariness, tiredness, lassitude, fatigue, sleepiness, drowsiness, enervation, somnolence
    View synonyms

Origin

Late 17th century: from Greek narkōsis, from narkoun ‘make numb’.

Pronunciation

narcosis

/nɑrˈkoʊsəs//närˈkōsəs/