Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

narcolepsy

play
noun, nar·co·lep·sy \ˈnär-kə-ˌlep-sē\

Simple Definition of narcolepsy

  • medical : a medical condition in which someone suddenly falls into a deep sleep while talking, working, etc.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of narcolepsy

plural narcolepsies

  1. :  a condition characterized by brief attacks of deep sleep often occurring with cataplexy and hypnagogic hallucinations

narcoleptic play \ˌnär-kə-ˈlep-tik\ adjective

Origin of narcolepsy

International Scientific Vocabulary


First Known Use: 1880


Medical Dictionary

narcolepsy

play
noun nar·co·lep·sy \ˈnär-kə-ˌlep-sē\

Medical Definition of narcolepsy

plural narcolepsies

  1. :  a condition characterized by brief attacks of deep sleep often occurring with cataplexy and hypnagogic hallucinations—compare hypersomnia 2




Learn More about narcolepsy


Seen and Heard

What made you want to look up narcolepsy? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

deserving imitation because of excellence

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

perplex reduce soothe disapprove
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ