| 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 Synonyms: prostate specific antigen |
| PSA - Problem Statement Analizer. See PSL/PSA. |
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