HYPERSOMNIA
Meaning of HYPERSOMNIA in English
— hypersomniac , n.
/huy'peuhr som"nee euh/ , n. Pathol.
a tendency to sleep excessively.
[ 1875-80; HYPER- + (IN)SOMNIA ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012