noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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General-American:/hɪpˈnəʊ.sɪs/
General-American:/hɪpˈnoʊ.sɪs/
US:Recorded audio is listed in the source snapshot.
rhymes with -əʊsɪs
CMU ARPABET:HH IH0 P N OW1 S AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A trancelike state, artificially induced, in which a person has a heightened suggestibility, and in which suppressed memories may be experienced.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Examples
clinical hypnosis
under hypnosis
self-hypnosis
She entered a state of deep hypnosis.
The therapy used hypnosis to treat anxiety.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
The practice of inducing hypnosis; hypnotism.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
Any of various sleep-like conditions.
Definition source: English Wiktionary via Wiktextract
Usage: countable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
a state that resembles sleep but that is induced by suggestion
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Etymology tree Proto-Indo-European *swep-der. Proto-Indo-European *supnós Proto-Hellenic *húpnos Ancient Greek ὕπνος (húpnos) Proto-Indo-European *-yéti Proto-Indo-European *-oyétider.? Ancient Greek -όω (-óō) Ancient Greek ὑπνόω (hupnóō) Proto-Indo-European *-tis Ancient Greek -τις (-tis) Ancient Greek -σις (-sis) Ancient Greek ὕπνωσις (húpnōsis)lbor. English hypnosis From modern scholarly Ancient Greek ὕπνωσις (húpnōsis), which formation closes the derivational gap between the ancient words ὑπνόω (hupnóō, “I put to sleep”) and ὑπνωτικός (hupnōtikós, “sleep-inducing, soporific”). Ultimately traces back to ὕπνος (húpnos, “sleep”).
Across languages
Translations
34 source translations are retained for this English entry.
Arabic:
تَنْوِيم مَغْنَاطِيسِيّ
(tanwīm maḡnāṭīsiyy)
— trancelike state
Assyrian Neo-Aramaic:
ܛܘܼܠܵܥܵܐ ܡܲܓ݂ܢܵܛܝܼܣܵܝܵܐ
(ṭullāˁā maḡnāṭīsāyā)
— trancelike state