[ahy-suh-trop-ik, -troh-pik]
Physics. of equal physical properties along all axes. Compare anisotropic ( def 1 ).
Zoology. lacking axes that are predetermined, as in some eggs.
Also, isotropous [ahy-so-truh-puhs] .

1860–65; iso- + -tropic

isotropy, noun
nonisotropic, adjective
nonisotropous, adjective
unisotropic, adjective
unisotropous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
isotropic or isotropous (ˌaɪsəʊˈtrɒpɪk, aɪˈsɒtrəpəs)
1.  having uniform physical properties in all directions
2.  biology not having predetermined axes: isotropic eggs
isotropous or isotropous
iso'tropically or isotropous
i'sotropy or isotropous

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

isotropic i·so·trop·ic (ī'sə-trŏp'ĭk, -trō'pĭk)
Identical in all directions.

i·sot'ro·py (ī-sŏt'rə-pē) or i·sot'ro·pism (-pĭz'əm) n.
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
isotropic   (ī'sə-trō'pĭk, -trŏp'ĭk)  Pronunciation Key 
Identical in all directions; invariant with respect to direction. For example, isotropic scattering of light by a substance entails that the intensity of light radiated is the same in all directions. Compare anisotropic.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Go ahead and reference isotropic data or tree rings and make me laugh.
If the universe is locally locally isotropic, as viewed from any point, it is also uniform.
Material properties may be temperature-dependent and either isotropic or orthotropic.
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