isotherm Hear it!

isotherm definition

iso·therm (-t̸hʉrm′)

noun

  1. a line on a map connecting points on the earth's surface having the same mean temperature or the same temperature at a given time
  2. a line representing changes of volume or pressure at constant temperature

Etymology: Fr isotherme < iso-, iso- + Gr thermē, heat < thermos, hot: see warm

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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