| Title | insomnia |
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Merriam-Webster's Collegiate Dictionary in·som·nia ETYMOLOGY Latin, from insomnis sleepless, from in- + somnussleep — more at somnolent DATE circa 1623 : prolonged and usually abnormal inability to obtain adequate sleep English Etymology insomnia 1623, Anglicized as insomnie, from L. insomnia "want of sleep," from in- "not" + somnus "sleep" (see somnolence). The modern form is from 1758. Insomniac (n.) is from 1908. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 insomnia in·som·nia / in5sCmniE; NAmE -5sB:m- / noun[U] the condition of being unable to sleep 失眠(症): to suffer from insomnia 失眠 ⇨ see also sleeplessness at sleepless Merriam-Webster's Collegiate Thesaurus-11th Edition n. Function: noun prolonged inability to obtain adequate sleep FF1C;sleeping pills failed to relieve his insomniaFF1E; Synonyms: insomnolence, sleeplessness Related Words: restlessness, wakefulness; stress, tension Webster's Third New International Dictionary, Unabridged in·som·nia \ə̇nˈsämnēə\ noun (-s) Etymology: Latin, from insomnis sleepless (from in- in- (I) + somnus sleep) + -ia — more at somnolent : prolonged inability to obtain adequate sleep : abnormal wakefulness : sleeplessness |
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