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isothermal

or i·so·ther·mic

[ahy-suh-thur-muh l]
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adjective
  1. occurring at constant temperature.
  2. pertaining to an isotherm.
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noun
  1. Meteorology. an isotherm.
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Origin of isothermal

1820–30; < French isotherme isothermal (< Greek iso- iso- + thérmē heat) + -al1
Related formsi·so·ther·mal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for isothermal

Historical Examples

  • Has the isothermal line any relation to the number of millionaires?

    The Principles of Economics

    Frank A. Fetter

  • Reference is here invited to Humboldt's thermal and isothermal lines.

    Everyday Objects

    W. H. Davenport Adams

  • The isothermal solubility curves, also, have a similar form.

  • The other isothermal curves can be followed in a similar manner.

  • In this figure ak′b is an isothermal, ak″ is the curve for the binary system, and K is the ternary critical point.

British Dictionary definitions for isothermal

isothermal

adjective
  1. (of a process or change) taking place at constant temperature
  2. of or relating to an isotherm
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noun
  1. another word for isotherm
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Derived Formsisothermally, adverb
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 isothermal

1826 (adj.); 1852 (n.), from French isotherme (see isotherm) + -al (1).

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Online Etymology Dictionary, © 2010 Douglas Harper
isothermal in Medicine

isothermal

(ī′sə-thûr′məl)
adj.
  1. Of, relating to, or indicating equal or constant temperatures.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
isothermal in Science

isothermal

[ī′sə-thûr′məl]
  1. Relating to or indicating equal or constant temperatures.
  2. Relating to a process, usually changes of pressure and volume, occurring at a constant temperature and following Boyle's Law.
  3. Relating to an isotherm.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.