Cell Biology. the appendage of the neuron that transmits impulses away from the cell body.

Also ax·one [ak-sohn] /ˈæk soʊn/.

Origin of axon

1835–45; < New Latin < Greek áxōn an axle, axis; akin to Latin axis
Related formsax·on·al [ak-suh-nl, ‐son-l] /ˈæk sə nl, ‐ˌsɒn l/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for axon

Historical Examples of axon

  • Mr. Axon says it is current in Lancashire and in Cornwall, Antiquary, xi.

  • We saw a moment ago that every axon is inclosed in a sheath.


    Ernest G. Martin

  • The contact of the axon of one neuron with the dendrons of another is called a synapse.


    James J. Walsh

  • Most nerve cells have two kinds of branches, called the axon and the dendrites.


    Robert S. Woodworth

  • Sandy-haired men have no age until they are fifty-five, and Axon was not fifty-five.

    The Price of Love

    Arnold Bennett

British Dictionary definitions for axon


axone (ˈæksəʊn)


the long threadlike extension of a nerve cell that conducts nerve impulses from the cell bodyCompare dendrite
Derived Formsaxonal, adjective

Word Origin for axon

C19: via New Latin from Greek: axis, axle, vertebra
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for axon

"axis of the vertebrate body," 1842, from Greek axon "axis" (see axis).

Online Etymology Dictionary, © 2010 Douglas Harper

axon in Medicine




The usually long process of a nerve fiber that generally conducts impulses away from the body of the nerve cell.
Related formsaxon•al (ăksə-nəl, ăk-sŏnəl) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

axon in Science



The long portion of a neuron that conducts impulses away from the body of the cell. Also called nerve fiber
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

axon in Culture


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.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.