ejaculation of semen backward toward the bladder instead of forward through the urethra.
- Retrograde embolism
retrograde embolism n. The obstruction of a vein by a mass carried in a direction opposite to that of the normal blood current.
- Retrograde hernia
retrograde hernia n. A hernia of two loops of intestine, with the portion of intestine between the loops lying in the abdominal cavity.
- Retrograde menstruation
retrograde menstruation n. A flow of menstrual blood into the fallopian tubes.
- Retrograde rotation
noun rotation in an opposite direction from the typical rotation within a system Examples Venus, Pluto, and Uranus have retrograde rotation in our solar system.