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.
autohypnosis
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.
autohypnotic
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.
dyshypnia
1. A sleeping disorder.
2. Difficult or restless sleep.
euhypnia
A condition of restful and easy sleep.
hyperhypnosis
A pathological state of prolonged sleep, from which the patient can be roused only partly and very briefly; hypersomnia, lethargy.
hypnagogia
Denoting a transitional state, related to the hypnoidal, preceding sleep; applied also to various hallucinations that may manifest themselves at that time.
hypnagogic, hypnogogic
1. Sleep-producing; hypnotic.
2. Preceding sleep: a reference to images or dreams that are perceived during the transition between the waking state and sleep.
hypnagogue
1. A hypnotic agent that induces sleep.
2. An agent causing sleepiness or drowsiness.
hypnalgia
Pain occurring during sleep; also known as “dream pain”.
hypnapagogic
1. Inducing sleep or induced by sleep.
2. In psychology, pertaining to hallucinations or dreams that occur just before the loss of consciousness.
3. Denoting a condition similar to the hypnagogic, through which the mind passes in coming out of sleep; denoting also hallucinations experienced at such times.
Also see the mesmerism page for additional enlightenment.

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