hypno-, hypn-

(Greek: sleep)

ahypnia (s), ahypnias (pl) (nouns)
A state of profound insomnia or the inability to sleep or incapable of sleeping for very long: John felt that he had to check his computer to see if it was working.
ahypnosis (s), ahypnoses (pl) (nouns)
A state of profound insomnia or the inability to sleep; sleeplessness.
anhypnia (s), anhypnias (pl) (nouns)
Another term for insomnia or the inability to sleepl.
antihypnotic, anhypnotic (s); antihypnotics, anhypnotics (pl) (nouns)
Tending to prevent sleep; such as, a medicine, etc. that is used for this purpose.
1. The act or process of hypnotizing oneself.
2. A self-induced hypnotic state, often employed as a way to enhance the suggestions given the subject by the therapist; self-hypnosis and idiohypnotism.
3. The intelligent use of self-hypnosis offers much to the individual in whom increased efficiency in concentration, relaxation, self-control, and learning capacity is important. —Duncan A. Holbert, M.D.
dehypnotize (verb), dehypnotizes; dehypnotized; dehypnotizing
To normalize someone out of a hypnotic condition: George was hypnotized by a physician for psychiatric reasons and then he was dehypnotized back to his regular state or situation.
1. A sleeping disorder.
2. Difficult or restless sleep.
A condition of restful and easy sleep.
A pathological state of prolonged sleep, from which the patient can be roused only partly and very briefly; hypersomnia, lethargy.
hypnagogia (s) (noun) (no pl)
The transitional state, related to the hypnoidal, just preceding sleep: In class Judy learned about hypnagogia as being the condition between wakefulness and sleep.

Hypnagogia is also applied to various hallucinations that may manifest themselves at that time.

hypnagogic, hypnogogic (adjective); more hypnagogic, most hypnagogic; more hypnogogic , most hypnogogic
1. Regarding a substance or something that induces sleep; soporific: Dr. Tall suggested that Carol take some hypnagogic medication in order for her to slumber through the night.
2. Concerning the condition just preceding sleep: A hypnagogic condition can produce images or dreams that are perceived during the transition between the waking state and sleep.
hypnagogue (s) (noun), hypnagogues (pl)
A hypnotic agent that induces sleep: Jack had problems with getting to sleep and sleeping through the night, so his doctor gave him a prescription for hypnagogue which should give him a good night's sleep!

A hypnagogue can be any agent causing sleepiness or drowsiness, like an uninteresting book or a boring movie!

hypnalgia (s) (noun) (no pl)
Pain occurring during sleep; dream pain: Suddenly Isabel woke up from a nightmare in which she experienced severe pain, a hypnalgia, that held on when awake!
hypnapagogic (adjective), more hypnapagogic, most hypnapagogic
1. Relating to the time of drowsiness just before going to sleep: Jane fell into a hypnapagogic state preceding her night's sleep.
2. In psychology, pertaining to hallucinations or dreams that occur just before the loss of consciousness: In class: Susan learned about hypnapagogic conditions with images passing by in one's mind and occurring before slumber sets in.
3. Denoting a condition similar to the hypnagogic through which the mind passes when coming out of sleep: Hypnapagogic situations also relate to hallucinations experienced at such times prior to the state of being asleep.
Also see the mesmerism page for additional enlightenment.

Related "sleep" units: dorm-; letho-; narco-; oneiro- (dream); somni-; sopor-.