isogeothermPronunciation: /ˌʌɪsə(ʊ)ˈdʒiːə(ʊ)θəːm/Definition of isogeotherm noun Geography a line or surface on a diagram connecting points representing those in the interior of the earth having the same temperature. Derivatives isogeothermalPronunciation: /-ˈθəːm(ə)l/ adjective Origin: mid 19th century: from iso- 'equal' + geo- 'earth' + Greek thermē 'heat'isogeotherm in other Oxford dictionaries Definition of isogeotherm in the US English dictionary
