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Definition of Somnolence

Somnolence: Sleepiness, the state of feeling drowsy, ready to fall asleep. A person experiencing somnolence is somnolent and is acting somnolently.

Somnolence, somnolent, and somnolently go back to the Latin "somnus" meaning (please don't yawn) "sleep."

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=13097
Last Editorial Review: 6/14/2012

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