hypersomnia
[ hahy-per-som-nee-uh ]
nounPathology.
a tendency to sleep excessively.
Origin of hypersomnia
1First recorded in 1875–80; hyper- + (in)somnia
Other words from hypersomnia
- hy·per·som·ni·ac, noun
Words Nearby hypersomnia
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
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