a. Of or relating to hypnosis.
b. Of or relating to hypnotism.
2. Inducing or tending to induce sleep; soporific: read the bedtime story in a hypnotic voice.
a. A person who is hypnotized.
b. A person who can be hypnotized.
2. An agent that causes sleep; a soporific.
[French hypnotique, from Late Latin hypnōticus, inducing sleep, from Greek hupnōtikos, from hupnoun, to put to sleep, from hupnos, sleep; see swep- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.