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Publice Service Announcement. Rarely used as an acronym.
This following snow warning is a public service announcement.
by Naugahyde March 06, 2004
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3
A protein made specifically by the prostate gland -- Prostate Specific Antigen. It is measured by a blood test, and is used for screening for prostate cancer and checking for the results of treating that disease.
James saw his doctor today, since he was upset that his PSA was over ten thousand (normal is up to four). Then he went to make final arrrangements.
by Dr. Rosebud July 02, 2005
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5
Pacific Southwest Airlines headquartered in San Diego, California. Featured Smileliners (Airplanes with smiles painted on the nose). Purchased by USAir in 1987
"PSA, Catch our smile!"
by uva185 May 04, 2006
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6
Personal sale assisant
This PSA told me I should upgrade my computer instead of buying a new one.
by Alexandre22 November 17, 2007
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