Definition of isogeotherm in English:

isogeotherm

Pronunciation /ˌīsəˈjēəTHərm/ /ˌaɪsəˈdʒiəθərm/

noun

Geography
  • A line or surface on a diagram connecting points representing those in the interior of the earth having the same temperature.

    • ‘It is a well-known fact that the presence of water in the pores of a rock increases its capacity to conduct heat, so that we may surmise a rise in the local isogeotherm in such situations.’

Origin

Mid 19th century from iso-‘equal’ + geo-‘earth’ + Greek thermē ‘heat’.