hypersomnia
Americannoun
Other Word Forms
Derived Forms
Etymology
Origin of hypersomnia
First recorded in 1875–80; hyper- + (in)somnia
Vocabulary lists containing hypersomnia
Psychological Conditions and Disorders
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Psychology
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
It’s acquiring Centessa Pharmaceuticals, which is working on orexin receptor 2 agonists for conditions like narcolepsy and idiopathic hypersomnia — forms of daytime sleepiness.
From MarketWatch • Mar. 31, 2026
Its first-generation candidate, ORX750, is aimed at treating three types of severe narcolepsy—type I, type II, and idiopathic hypersomnia.
From Barron's • Sep. 26, 2025
Researchers also looked at daytime sleepiness in people with idiopathic hypersomnia over an average of 12 years.
From Science Daily • Dec. 13, 2023
“Those under placebo deteriorated very rapidly,” said Dr. Isabelle Arnulf, a sleep disorder specialist at the Pitié-Salpêtrière University Hospital in Paris, who has studied hypersomnia for 25 years and helped carry out Jazz’s clinical trial.
From Seattle Times • Aug. 12, 2021
I generally drink from half to three-quarters of a cup of black coffee, or nearly black, every morning at from eleven to five minutes past, so as to keep off hypersomnia.
From Moonbeams from the Larger Lunacy by Leacock, Stephen
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
