Definition of axon in English:



  • The long threadlike part of a nerve cell along which impulses are conducted from the cell body to other cells.

    Compare with dendrite
    • ‘All axons from the enteric nerve cells lack a myelin sheath.’
    • ‘In contrast to the innervation of the proximal esophagus, axons from vagal neurons synapse within ganglia of the myenteric plexus.’
    • ‘Neurites are the long projections of nerve cell bodies called axons and dendrites.’
    • ‘If aluminium causes direct neuronal death, why would this lead to slowing of conduction along the axons of the optic nerves?’
    • ‘The nerve fibres in the optic tract (the axons of retinal ganglion cells) terminate in two main areas of the brain.’
    nerve fibre
    View synonyms


Mid 19th century (denoting the body axis): from Greek axōn ‘axis’.