/ Dictionary / Index S solar furnace: Meaning and Definition of Find definitions for: so'lar fur'nace Pronunciation: [key] a furnace using sunlight concentrated by concave mirrors as the direct source of heat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. solar flare solar-heat Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language