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AXON

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ax⋅on

[ak-son]
–noun
Cell Biology. the appendage of the neuron that transmits impulses away from the cell body.
Also, ax⋅one [ak-sohn] .


Origin:
1835–45; < NL < Gk áxōn an axle, axis; akin to L axis


ax⋅on⋅al [ak-suh-nl, ‑son-l] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ax·on   (āk'sŏn')   
n.  The usually long process of a nerve fiber that generally conducts impulses away from the body of the nerve cell.

[Greek axōn, axis.]
ax'on·al (āk'sə-nəl, āk-sŏn'əl) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Cultural Dictionary

axon

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 American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ax·on
Pronunciation: 'ak-"sän
Variant: also ax·one /-"sOn/
Function: noun
: a usually long andsingle nerve-cell process that usually conducts impulses away from the cell body —ax·o·nal /'ak-s&n-&l; ak-'sän-, -'sOn-/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

axon ax·on (āk'sŏn') or ax·one (-sōn')
n.
The usually long process of a nerve fiber that generally conducts impulses away from the body of the nerve cell.


ax'on·al (āk'sə-nəl, āk-sŏn'əl) adj.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia

axon

portion of a nerve cell (neuron) that carries nerve impulses away from the cell body. A neuron typically has one axon that connects it with other neurons or with muscle or gland cells. Some axons may be quite long, reaching, for example, from the spinal cord down to a toe. Most axons of vertebrates are enclosed in a myelin sheath, which increases the speed of impulse transmission; some large axons may transmit impulses at speeds up to 90 metres (300 feet) per second.

Learn more about axon with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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