In pumps. Flexible impeller of cooling system pump of an outboard engine. An impeller is a rotating component of a centrifugal pump, usually made of iron, steel, bronze, brass, aluminium or plastic, which transfers energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid outwards from the center of rotation.
noun, plural: dorsal root ganglia. (neuroanatomy) The ganglion on the dorsal root of every spinal nerve. It is where the cell bodies of sensory neurons are located; hence, it is chiefly involved in the transmission of sensory information.
DRG Therapy: A Different Approach to Pain Relief. Dorsal root ganglion (DRG) therapy is a new type of neurostimulation therapy designed to manage difficult-to-treat chronic pain in specific areas of the lower body, such as the foot, knee, hip or groin. If you suffer from this kind of pain, DRG therapy may work where other therapies have notâor may have provided only partial relief.