Definition of geothermometer in English:

geothermometer

noun

Geology
  • A feature of a rock (typically a mineral or mineral assemblage) from which is inferred the temperature of its formation.

Origin

Mid 19th century (in an earlier sense). From geo- + thermometer, in sense 1 after German Geothermometer.

Pronunciation

geothermometer

/ˌdʒiːəʊθəˈmɒmɪtə/