a combining form meaning “sleep,” “hypnosis,” used in the formation of compound words: hypnotherapy.

Nearby words

  1. hypnagogic image,
  2. hypnagogic state,
  3. hypnagogue,
  4. hypnapagogic,
  5. hypnesthesia,
  6. hypnoanalysis,
  7. hypnobirthing,
  8. hypnodrama,
  9. hypnogenesis,
  10. hypnogenetic

Also especially before a vowel, hypn-.

Origin of hypno-

< Greek hýpno(s) sleep; see Hypnos

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for hypno-


before a vowel hypn-

combining form

indicating sleephypnophobia
relating to hypnosishypnotherapy

Word Origin for hypno-

from Greek hupnos sleep

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for hypno-


word-forming element meaning "sleep," from Greek hypno-, comb. form of hypnos "sleep" (see somnolence).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for hypno-




The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.