| Answer | Crossword Clue |
|---|---|
| geotherms | GEOTHERM, a line on a the earth connecting points of equal temperature |
| geotherm | a line on a the earth connecting points of equal temperature |
| isothermal | a line on a map connecting points of equal average temperature |
| isothermals | ISOTHERMAL, a line on a map connecting points of equal average temperature |
| isogeothermic | a line on a map connecting points of equal subterranean temperature also ISOGEOTHERM, ISOGEOTHERMAL |
| isogeothermics | ISOGEOTHERMIC, a line on a map connecting points of equal subterranean temperature also ISOGEOTHERM, ISOGEOTHERMAL |
| isotherm | line on a weather map or chart connecting points having equal temperature |
