PSA

American  

abbreviation

1. prostate specific antigen: a protein, produced by the prostate, elevated levels of which may indicate the presence of cancer.

2. public service announcement: an audio or video spot or advertisement to educate or promote awareness about health, safety, civics, etc.

3. positive security assurance.

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PSA British  

abbreviation

1. 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

2. (in New Zealand) Public Service Association

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PSA Scientific  

1. Abbreviation of prostatic-specific antigen

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Example Sentences

Stellantis, formed in 2021 through a merger of France's PSA Group and Italian-American company Fiat-Chrysler, had in recent weeks confirmed its shift away from the EV sector.

From Barron's • Feb. 26, 2026

Vir Biotechnology’s VIR-5500 prostate cancer drug shows promising Phase 1 trial results, with 14 of 17 patients achieving at least a 50% PSA reduction.

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

On Sept. 24, lawyers and families of some of the passengers announced that the families were suing American Airlines, its subsidiary PSA Airlines and the federal government, including the Federal Aviation Administration and the Army.

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