Insomnia
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GRE Barron
目录 |
[编辑] 解释
[编辑] GRE 红宝书
- n. 失眠症
- ［英］ n. 失眠症 ( abnormally prolonged inability to sleep)
- ［记］ +in ( 不) +somn ( 睡眠) +ia -> 不能睡眠 -> 失眠症
- ［同］ 同根词: somniferous ( 催眠的) ; somnolent ( 想睡的)
[编辑] Webster Collegiate
noun
- Etymology: Latin, from insomnis sleepless, from in- + somnus sleep — more at somnolent
- Date: circa 1623
- prolonged and usually abnormal inability to obtain adequate sleep
- ? insomniac adjective or noun
