geothermal

views updated May 23 2018

ge·o·ther·mal / ˌjēōˈ[unvoicedth]ərməl/ (also ge·o·ther·mic / -ˈ[unvoicedth]ərmik/ ) • adj. of, relating to, or produced by the internal heat of the earth: some 70% of Iceland's energy needs are met from geothermal sources.