noun Pathology.
loss of coordination of the muscles, especially of the extremities.
Also, ataxy [uh-tak-see, a-tak-] .
Compare tabes dorsalis.

1605–15; < Neo-Latin < Greek: indiscipline, equivalent to a- a-6 + táx(is) -taxis + -ia -ia

ataxic, adjective
preataxic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
ataxia or ataxy (əˈtæksɪə, əˈtæksɪ)
pathol lack of muscular coordination
[C17: via New Latin from Greek: lack of coordination, from a-1 + -taxia, from tassein to put in order]
ataxy or ataxy
[C17: via New Latin from Greek: lack of coordination, from a-1 + -taxia, from tassein to put in order]
a'taxic or ataxy
a'tactic or ataxy

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

also Anglicized as ataxy, 1610s, "confusion, disorder," medical L., from Gk. ataxia, from a-, privative prefix, + taxis "arrangement, order," from tassein "to arrange" (see tactics). Pathological sense is attested from 1670. Related: Ataxic (1853).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ataxia a·tax·i·a (ə-tāk'sē-ə) or a·tax·y (ə-tāk'sē)
Loss of the ability to coordinate muscular movement. Also called dyssynergia, incoordination.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
ataxia   (ə-tāk'sē-ə)  Pronunciation Key 
Loss of muscular coordination as a result of damage to the central nervous system.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Cerebellar ataxia may appear during the recovery phase or later.
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