geothermal

UK: ˌdʒiːəʊˈθɜːməl | US: ˌdʒiːoʊˈθɜːrməl

Definition

  1. adj. relating to or produced by the internal heat of the earth

Structure
geo <earth>therm <heat>al <adjective suffix>
Etymology

The word "geothermal" combines Greek-derived morphemes:

  • "geo" (from Greek "gē," meaning "earth")
  • "therm" (from Greek "thermē," meaning "heat")
  • "-al" (a Latin-derived suffix forming adjectives).
    The term emerged in the 19th century to describe Earth's internal heat, reflecting scientific interest in harnessing natural energy. The logical progression—earth + heat—directly mirrors its modern usage in geology and energy science.
Examples

  1. Iceland utilizes geothermal energy to power homes and industries.

  2. Geothermal activity often causes hot springs and geysers.

  3. Scientists study geothermal reservoirs for sustainable energy solutions.

  4. The region's geothermal potential makes it ideal for clean energy projects.

  5. Geothermal heat pumps are efficient for heating and cooling buildings.