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.
Dorsal Root Ganglion Stimulation â DRG Stimulation Pain Doctor 2016-04-26T08:44:52+00:00. The dorsal root ganglion is a bundle of nerve cell bodies (i.e., a ganglion) located within the posterior region of various vertebrae along the spinal column and is adjacent to the dorsal nerve root.