retrograde block n.
Impaired conduction of an impulse backward from the ventricles or atrioventricular node into the atria.
noun 1. 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.