geotherm
- a line or surface within or on the earth connecting points of equal temperature
- the representation of such a line or surface on a map or diagram
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Examples from the Web for geotherm
Historical Examples
The dotted line may be assumed to be a geotherm having a temperature of viscosity.
The Birth-Time of the World and Other Scientific EssaysJ. (John) Joly