preganglionic
pre·gan·gli·on·ic
adj \-ˌgaŋ-glē-ˈän-ik\Definition of PREGANGLIONIC
: anterior or proximal to a ganglion; specifically : being, affecting, involving, or relating to a usually myelinated efferent nerve fiber arising from a cell body in the central nervous system and terminating in an autonomic ganglion—compare postganglionic
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