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
Some models affirm signs of psychosis more than half the time when prompted.
—
Thomas Westerholm, MSNBC Newsweek, 20 June 2025
She had been concerned over his struggle with addiction and mental health, which had led to period of psychosis.
—Nancy Dillon, Rolling Stone, 16 June 2025
Everything is at the expense of someone’s psychosis.
—Esther Zuckerman, HollywoodReporter, 10 June 2025
The study aimed to find relationships between those having a particular chromosomal omission, known as DiGeorge syndrome or technically as 22q11.2 deletion syndrome (DS), and linking the brain patterns of those individuals to common psychosis symptoms.
—Lance Eliot, Forbes.com, 2 June 2025
See All Example Sentences for psychosis
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Thomas Westerholm, MSNBC Newsweek, 20 June 2025
She had been concerned over his struggle with addiction and mental health, which had led to period of psychosis.
—Nancy Dillon, Rolling Stone, 16 June 2025
Everything is at the expense of someone’s psychosis.
—Esther Zuckerman, HollywoodReporter, 10 June 2025
The study aimed to find relationships between those having a particular chromosomal omission, known as DiGeorge syndrome or technically as 22q11.2 deletion syndrome (DS), and linking the brain patterns of those individuals to common psychosis symptoms.
—Lance Eliot, Forbes.com, 2 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 8 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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