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
However, psychosis can also happen much earlier or later.
—
Brittany Dube, Health, 16 Jan. 2025
There are nearly 6 million patients in the U.S. with Alzheimer’s, and around half of them have psychosis, or symptoms such as hallucinations and delusions, Elkins said.
—Annika Kim Constantino, CNBC, 15 Jan. 2025
His symptoms include delusional and bizarre behavior, aggression and acute psychosis.
—Carol Marbin, Miami Herald, 2 Jan. 2025
Neely had a lengthy criminal record, an active arrest warrant, a history of psychosis and was high on K2, a synthetic form of marijuana that pathologists described as a stimulant.
—Jackson Thompson, Fox News, 14 Dec. 2024
See all Example Sentences for psychosis 
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Brittany Dube, Health, 16 Jan. 2025
There are nearly 6 million patients in the U.S. with Alzheimer’s, and around half of them have psychosis, or symptoms such as hallucinations and delusions, Elkins said.
—Annika Kim Constantino, CNBC, 15 Jan. 2025
His symptoms include delusional and bizarre behavior, aggression and acute psychosis.
—Carol Marbin, Miami Herald, 2 Jan. 2025
Neely had a lengthy criminal record, an active arrest warrant, a history of psychosis and was high on K2, a synthetic form of marijuana that pathologists described as a stimulant.
—Jackson Thompson, Fox News, 14 Dec. 2024
See all Example Sentences for psychosis
Dictionary Entries Near psychosis
Cite this Entry
“Psychosis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/psychosis. Accessed 27 Jan. 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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