hypersomnia

[ hahy-per-som-nee-uh ]

nounPathology.
  1. a tendency to sleep excessively.

Origin of hypersomnia

1
First 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. 2024