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isogeotherm

American  
[ahy-suh-jee-uh-thurm] / ˌaɪ səˈdʒi əˌθɜrm /

noun

  1. an imaginary line connecting all points within the earth having the same mean temperature.

isogeotherm British  
/ ˌaɪsəʊˈdʒiːəʊˌθɜːm /

noun

  1. an imaginary line below the surface of the earth connecting points of equal temperature

"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

Other Word Forms

  • isogeothermal adjective
  • isogeothermic adjective

Etymology

Origin of isogeotherm

First recorded in 1860–65; iso- + geo- + therm

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.