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PSA

American

abbreviation

prostate specific antigen: a protein, produced by the prostate, elevated levels of which may indicate the presence of cancer.
public service announcement: an audio or video spot or advertisement to educate or promote awareness about health, safety, civics, etc.
positive security assurance.

PSA British

abbreviation

prostatic specific antigen: an enzyme secreted by the prostate gland, increased levels of which are found in the blood of patients with cancer of the prostate
(in New Zealand) Public Service Association

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

PSA Scientific

Abbreviation of prostatic-specific antigen

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In 2021, that company merged with France’s PSA Group to form Stellantis.

From The Wall Street Journal • Apr. 4, 2026

Nine patients showed at least a 90% decrease in PSA.

From Barron's • Feb. 24, 2026

According to Goldin, the auction house that organized the trading card auction, Paul’s is the only Pikachu Illustrator card to achieve that “virtually perfect” PSA grading.

From Los Angeles Times • Feb. 17, 2026

Sam had flown with PSA Airlines, a subsidiary of American Airlines, for about two years before the crash.

From The Wall Street Journal • Feb. 14, 2026

The same meme makes the rounds every storm: “Tornado season PSA: Bras on, teeth in!”

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023