axon ax·on (āk'sŏn') or ax·one (-sōn')
The usually long process of a nerve fiber that generally conducts impulses away from the body of the nerve cell.
The part of a nerve cell or neuron that transfers a nerve impulse from the nerve cell body to a synapse with another cell. (See action potential.) Depending on the location of the cell, the length of an axon can vary widely. In some cases (such as the axons that form the spinal cord), they may be several feet long.