solar furnace

noun

a furnace using sunlight concentrated by concave mirrors as the direct source of heat.

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British Dictionary definitions for solar furnace

solar furnace

noun

a furnace utilizing the sun as a heat source, sunlight being concentrated at the focus of a system of concave mirrors

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012