Medical Dictionary


noun hy·per·som·nia \-ˈsäm-nē-ə\

Medical Definition of HYPERSOMNIA

:  sleep of excessive depth or duration
:  the condition of sleeping for excessive periods at intervals with intervening periods of normal duration of sleeping and waking—compare narcolepsy
May 03, 2015
predicate Hear it
to base (something) on something else
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