Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Somnolence
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
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."
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