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insomnia
Pronunciation (in-som′nē-ă)
- Inability to sleep, in the absence of external impediments (e.g., noise, a bright light) during the period when sleep should normally occur; may vary in degree from restlessness or disturbed slumber to a curtailment of the normal length of sleep or to absolute wakefulness.
Syn: sleeplessness
[L. fr. in- priv. + somnus, sleep]
WebMD Medical Reference from "Stedman's Medical Dictionary"
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Stedman’s Medical Dictionary 28th Edition, Copyright© 2006_Lippincott Williams & Wilkins. All rights reserved.
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