urogenital sinus
n.
The ventral part of the cloaca after its separation from the rectum, giving rise to the lower part of the bladder in both sexes, to the prostatic portion of the male urethra, and to the urethra and vestibule in the female.
Words nearby urogenital sinus
urogenital,
urogenital canal,
urogenital diaphragm,
urogenital mesentery,
urogenital ridge,
urogenital sinus,
urogenital system,
urogenous,
urogram,
urography,
urokinase