Geothermometer
Pronunciation : Ge`o*ther*mom"e*ter
Part of Speech : n.
Etymology : [Gr. thermometer.] (Physics)
Definition : Defn: A thermometer specially constructed for measuring temperetures at a depth below the surface of the ground.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder