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 Hypnic
Medically reviewed by Min Clinic Staff | Updated: January 2026
Hypnic: 1. Inducing sleep. 2. Pertaining to sleep. A hypnic jerk is a sleep start or jerk.
From the Greek hypnikos, from the Greek hypnos, sleep.