[ ahy-suh-trop-ik, -troh-pik ]
/ ˌaɪ səˈtrɒp ɪk, -ˈtroʊ pɪk /


Physics. of equal physical properties along all axes.Compare anisotropic(def 1).
Zoology. lacking axes that are predetermined, as in some eggs.

Nearby words

  1. isotopic number,
  2. isotopic spin,
  3. isotopy,
  4. isotretinoin,
  5. isotron,
  6. isotype,
  7. isotypic,
  8. isovalericacidemia,
  9. isovolumic,
  10. isoxsuprine

Also i·sot·ro·pous [ahy-so-truh-puh s] /aɪˈsɒ trə pəs/.

Origin of isotropic

First recorded in 1860–65; iso- + -tropic

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for isotropic

British Dictionary definitions for isotropic


isotropous (aɪˈsɒtrəpəs)

/ (ˌaɪsəʊˈtrɒpɪk) /


having uniform physical properties in all directions
biology not having predetermined axesisotropic eggs
Derived Formsisotropically, adverbisotropy, noun

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 isotropic



1864, from iso- + Greek tropikos "belonging to a turning," from tropos "a turning, way, manner" (see trope).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for isotropic


[ ī′sə-trŏpĭk, -trōpĭk ]


Identical in all directions.
Related formsi•sotro•py (ī-sŏtrə-pē) null n.

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

Science definitions for isotropic


[ ī′sə-trōpĭk, -trŏpĭk ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.