Definition of narcosis in US English:

narcosis

noun

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

    • ‘Prolonged narcosis was introduced in the 1920s.’
    • ‘One possibility is that CO2 narcosis impaired cognitive function.’
    • ‘Specifically, they are compounds that produce narcosis or general anesthesia and relief from pain or analgesia.’
    • ‘Avoid alcohol or drugs before diving, as this increases the effects of narcosis.’
    • ‘Once you begin on the slippery slope of hypothermia, secondary problems such as narcosis and decompression sickness begin to increase drastically.’
    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

/närˈkōsəs//nɑrˈkoʊsəs/