Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Of, relating to, or indicating equal or constant temperatures.
  • adj. Of or designating changes of pressure and volume at constant temperature.
  • adj. Of or relating to an isotherm.
  • n. An isotherm.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Of or pertaining to a process that takes place at constant temperature
  • adj. Of or pertaining to an isotherm
  • n. An isotherm

from the GNU version of the Collaborative International Dictionary of English

  • adj. Relating to equality of temperature, or an isotherm.
  • adj. Having reference to the geographical distribution of temperature, as exhibited by means of isotherms

from The Century Dictionary and Cyclopedia

  • Of the same degree of heat; of the same temperature; in physical geography, pertaining to or marking equality of temperature; exhibiting the geographical distribution of temperature: as, an isothermal line; the isothermal relations of different continents; an isothermal chart. Also isothermous.
  • n. An isothermal line; an isotherm.
  • In crystallography, applied to the lines on a crystal face, or more generally to the surfaces in a crystal, which measure the rate of heat-conductivity, these lines or surfaces being characterized by equal degrees of temperature when heat is applied at a certain point.
  • n. In thermodynamics, a line or curve determined by the equation of state (pv = RT) of a system, when T has any constant value; a line of equal temperatures.
  • n. In spectrophotometry, a curve showing the distribution of intensities in the spectrum of a source of light maintained at constant temperature. Also called isotherm.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. of a process or change taking place at constant temperature

Etymologies

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