psychosis
noun
psy·cho·sis
sī-ˈkō-səs 
plural psychoses
sī-ˈkō-ˌsēz
: a serious mental illness (such as schizophrenia) characterized by defective or lost contact with reality often with hallucinations or delusions
Examples of psychosis in a Sentence
The patient suffers from some kind of psychosis.
Recent Examples on the Web
In the shadow of Coppola’s collective political fantasy Francis Ford Coppola’s 1979 phantasmagoria Apocalypse Now put the concept of social disaster and political psychosis into the mainstream, from the Vietnam War to the Covidapocalypse.
—
Armond White, National Review, 4 July 2025
Another step that could help youth mental health is HB 1594, requiring health insurance plans to provide complete coverage to anyone younger than 26 years old who is experiencing psychosis for the first time.
—Stephen Simpson, Austin American Statesman, 2 July 2025
Lost for nearly 50 years and never fully restored, its fragmented reels and sudden leaps only heighten the silent era’s disorienting psychosis.
—Ben Croll, Variety, 27 June 2025
There is some history of psychosis, so that’s to be determined.
—Landon Mion, FOXNews.com, 27 June 2025
See All Example Sentences for psychosis
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Armond White, National Review, 4 July 2025
Another step that could help youth mental health is HB 1594, requiring health insurance plans to provide complete coverage to anyone younger than 26 years old who is experiencing psychosis for the first time.
—Stephen Simpson, Austin American Statesman, 2 July 2025
Lost for nearly 50 years and never fully restored, its fragmented reels and sudden leaps only heighten the silent era’s disorienting psychosis.
—Ben Croll, Variety, 27 June 2025
There is some history of psychosis, so that’s to be determined.
—Landon Mion, FOXNews.com, 27 June 2025
See All Example Sentences for psychosis
Cite this Entry
“Psychosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/psychosis. Accessed 23 Jul. 2025.
Copy CitationKids Definition
psychosis
noun
psy·cho·sis
sī-ˈkō-səs
plural psychoses
-ˈkō-ˌsēz
: a serious mental illness marked by loss of or greatly lessened ability to test whether what one is thinking and feeling about the real world is really true
Medical Definition
psychosis
noun
psy·cho·sis
sī-ˈkō-səs
plural psychoses
-ˌsēz
: a serious mental illness (as schizophrenia) characterized by defective or lost contact with reality often with hallucinations or delusions
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