hypersomnolence

noun

hy·​per·​som·​no·​lence ˌhī-pər-ˈsäm-nə-lən(t)s How to pronounce hypersomnolence (audio)
: excessive daytime sleepiness despite sufficient nighttime sleep
hypersomnolence brought on by sleep apnea or depression
Treatment with CPAP improves quality of life, vigilance, and cognitive function in persons who report hypersomnolenceKingman P. Strohl
also : prolonged nighttime sleep : hypersomnia

Word History

First Known Use

1918, in the meaning defined above

Time Traveler
The first known use of hypersomnolence was in 1918

Dictionary Entries Near hypersomnolence

Cite this Entry

“Hypersomnolence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypersomnolence. Accessed 24 May. 2024.

Medical Definition

hypersomnolence

noun
hy·​per·​som·​no·​lence -ˈsäm-nə-lən(t)s How to pronounce hypersomnolence (audio)
: excessive daytime sleepiness despite sufficient nighttime sleep
hypersomnolence brought on by sleep apnea or depression
also : prolonged nighttime sleep : hypersomnia sense 1
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