of or pertaining to hypnosis or hypnotism.
inducing or like something that induces hypnosis.
susceptible to hypnotism, as a person.
inducing sleep.
an agent or drug that produces sleep; sedative.
a person who is susceptible to hypnosis.
a person under the influence of hypnotism.

1680–90; < Late Latin hypnōticus < Greek hypnōtikós sleep-inducing, narcotic, equivalent to hypnō- (variant stem of hypnoûn to put to sleep; see Hypnos) + -tikos -tic

hypnotically, adverb
antihypnotic, adjective, noun
antihypnotically, adverb
nonhypnotic, adjective, noun
nonhypnotically, adverb
prehypnotic, adjective
unhypnotic, adjective
unhypnotically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
hypnotic (hɪpˈnɒtɪk)
1.  of, relating to, or producing hypnosis or sleep
2.  (of a person) susceptible to hypnotism
3.  a drug or agent that induces sleep
4.  a person susceptible to hypnosis
[C17: from Late Latin hypnōticus, from Greek hupnōtikos, from hupnoun to put to sleep, from hupnos sleep]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1625, "inducing sleep," originally used of drugs, from Fr. hypnotique "inclined to sleep, soporific," from L.L. hypnoticus, from Gk. hypnotikos "inclined to sleep, putting to sleep, sleepy," from hypnoun "put to sleep," from hypnos "sleep" (see somnolence). Modern sense
of "induced trance" first recorded in Eng. 1843, along with hypnotist, hypnotize, all coined by Dr. James Braid.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

hypnotic hyp·not·ic (hĭp-nŏt'ĭk)

  1. Of or relating to hypnotism or hypnosis.

  2. Inducing or tending to induce sleep; soporific.

An agent that causes sleep.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica


chemical substance used to reduce tension and anxiety and induce calm (sedative effect) or to induce sleep (hypnotic effect). Most such drugs exert a quieting or calming effect at low doses and a sleep-inducing effect in larger doses. Sedative-hypnotic drugs tend to depress the central nervous system. Since these actions can be obtained with other drugs, such as opiates, the distinctive characteristic of sedative-hypnotics is their selective ability to achieve their effects without affecting mood or reducing sensitivity to pain.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Barber's interest in the hypnotic state, and he examined people who could be
  easily or deeply hypnotized.
There are still free minds and free thinkers, untainted by the hypnotic
  machinery of the globalist empire.
The sight of flamingos bobbing their heads in unison almost in rhythm with the
  gun blasts is almost hypnotic.
The hypnotic image you see above is the result of a six-month exposure.
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