preganglionic
/ˌpriːɡaŋɡlɪˈɒnɪk/Anatomy and Physiology
adjective
Located proximal to a ganglion; specifically of, relating to, or designating autonomic nerve fibres and neurons that originate in the central nervous system and terminate in a ganglion. Contrasted with postganglionic.
Origin
Late 19th century. From pre- + ganglionic. Compare postganglionic.