isogeothermic

• a word derived from isogeotherm.
  isogeotherm

  noun

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

More Suggestions

• photothermic
• ectothermic
• endothermic
• euthermic
• exothermic
• geotherm
• geothermal
• homeotherm
• homeothermal