adjective

geothermal

geothermal

Geothermal energy is a renewable resource.

Geothermal energy is a renewable resource.

((geothermal)) + noun relating to the heat of the earth Geothermal energy is clean.

Synonyms: none are common.

From Greek 'geo-' meaning 'earth' and 'thermē' meaning 'heat'. Literally 'earth-heat'.

Think of 'geo' from geography (earth) and 'thermal' from thermometer (heat). Combine them for 'earth heat'.

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