Hypnopompia

Part of speech: noun

Definitions

1. The intermediate state of consciousness experienced when waking from sleep, where the mind gradually transitions from dreaming to full alertness
2. The brief period during which a person is emerging from sleep but not yet fully awake and aware of their surroundings
3. The threshold state between sleep and complete wakefulness, characterized by lingering drowsiness and partial consciousness

Etymology: Frederic W. H. Myers, an English psychical researcher, needed a name for the hazy state between sleep and waking, and he built it as a mirror image of an existing term. "Hypnagogic" combines the Greek "hypnos," meaning sleep, with "agōgos," meaning leading, and describes drifting into sleep. Myers paired it with "pompikos," from "pompē," a sending forth or escort, so hypnopompia describes sleep being led away as a person wakes. The "hypnos" root is also behind "hypnosis" and "hypnotic," which is why the term looks familiar even though it is a deliberate coinage. The ending "-ia" turns the adjective into a noun for the condition itself.