prostate gland   n.  A gland in male mammals surrounding the urethra at the base of the bladder that controls release of urine from the bladder and secretes a fluid which is a major constituent of semen.

prostate gland [(pros-tayt)]

A gland in the male reproductive system that surrounds the urethra at the lower end of the urinary bladder. A large part of the fluids that make up semen comes from the prostate.

Note: Prostate cancer is a leading cause of death among American men.

Main Entry: prostate gland
Function: noun
: a firm partly muscular partly glandular body that is situated about the base of the mammalian male urethra and secretes analkaline viscid fluid which is a major constituent of the ejaculatory fluid called also prostate

prostate gland n.
A chestnut-shaped body that surrounds the beginning of the male urethra at the base of the bladder, consists of two lobes connected anteriorly by an isthmus and posteriorly by a middle lobe lying above and between the ejaculatory ducts, controls the release of urine from the bladder, and whose milky fluid secretion is discharged into the urethra during semen emission.