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1. prostate-specific antigen
2. public service announcement
1. (Biochemistry) 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. (Social Welfare) (in New Zealand) Public Service Association
prostate specific antigen: a protein, produced by the prostate, elevated levels of which may indicate the presence of cancer.
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|Noun||1.||PSA - a protein manufactured exclusively by the prostate gland; PSA is produced for the ejaculate where it liquifies the semen and allows sperm cells to swim freely; elevated levels of PSA in blood serum are associated with benign prostatic hyperplasia and prostate cancer|
protein - any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high in protein"