[ ahy-suh-kawr ]
/ ˈaɪ səˌkɔr /


Physics. Also i·so·chor. Also called isometric, isometric line. for a given substance, a curve graphing temperature against pressure, when the volume of the substance is held constant.
Genetics. a large stretch of DNA with a high degree of uniformity in its base pairs.

Nearby words

  1. isocephalic,
  2. isoceraunic,
  3. isochasm,
  4. isocheim,
  5. isochor,
  6. isochromatic,
  7. isochromatophil,
  8. isochromosome,
  9. isochron,
  10. isochronal

Origin of isochore

iso- + -chor < Greek chṓra place, land

Related formsi·so·chor·ic [ahy-suh-kawr-ik, -kor-] /ˌaɪ səˈkɔr ɪk, -ˈkɒr-/, adjective


[ ahy-suh-me-trik ]
/ ˌaɪ səˈmɛ trɪk /

adjective Also i·so·met·ri·cal.


Origin of isometric

1830–40; < Greek isometr(ía) isometry + -ic

Related formsi·so·met·ri·cal·ly, adverbpseu·do·i·so·met·ric, adjectiveun·i·so·met·ri·cal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for isometric-line


/ (ˌaɪsəʊˈmɛtrɪk) /

adjective Also: isometrical


Also called: isometric drawing a drawing made in this way
Also called: isometric line a line on a graph showing variations of pressure with temperature at constant volume
Derived Formsisometrically, adverb

Word Origin for isometric

C19: from Greek isometria (see iso- + -metry) + -ic

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 isometric-line



1838, literally "of the same measure," coined from Greek isos "equal" (see iso-) + metron "measure" (see meter (n.2)). Originally a method of using perspective in drawing; the physiological sense relating to muscular action is from 1891, from German isometrisch in this sense (1882).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for isometric-line


[ ī′sə-mĕtrĭk ]


Of or exhibiting equality in dimensions or measurements.
Of, relating to, or being a crystal system of three equal axes lying at right angles to each other.
Of or involving muscular contraction against resistance in which the length of the muscle remains the same.

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

Science definitions for isometric-line


[ ī′sə-mĕtrĭk ]


See cubic.
Of or involving muscular contraction against resistance in which the length of the muscle remains the same.
A graph showing the relationship between two quantities, such as pressure and temperature, when a third quantity, such as volume, is held constant.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.