What does prostate specific antigen mean?
• PROSTATE SPECIFIC ANTIGEN (noun) The noun PROSTATE SPECIFIC ANTIGEN has 1 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 Familiarity information: PROSTATE SPECIFIC ANTIGEN used as a noun is very rare.