Synonyms for Prostate Specific Antigen (same or very similar meaning)
WordNet sense 1 (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):
PSAFrom the ODE community, based on WordNetadd/edit