noun · 2 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
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
Received-Pronunciation:/saɪˈkəʊsɪs/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/saɪˈkoʊsɪs/
rhymes with -əʊsɪs
homophone: sycosis
CMU ARPABET:S AY0 K OW1 S AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A severe mental disorder, sometimes with physical damage to the brain, marked by a deranged personality and a distorted view of reality.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: human-sciences, psychology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
any severe mental disorder in which contact with reality is lost or highly distorted
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.