: an enclosed structure in which heat is produced (as for heating a house or for reducing ore)
Examples of furnace in a Sentence
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Rather than using blast furnaces, which require coal, Ashley recommends the switch to electric arc furnaces, which use electricity and recycled scrap steel, according to Nucor.
—
Maya Wilkins, Chicago Tribune, 1 Apr. 2026
With years of experience in the region, Restivo's has become a familiar name for customers seeking help with furnaces, boilers, air conditioning units and more.
—Community's Choice Awards, The Providence Journal, 28 Mar. 2026
The sun's core is a nuclear furnace of shredded atoms, and its inner two-thirds make up a radiative zone of gamma-ray photons, so the solar magnetic field cannot be generated there.
—Keith Cooper, Space.com, 26 Mar. 2026
Using a 10-liter reactor, heat and pressure were applied to turn soggy stillage into a fine black powder, which was then refined in a furnace into two distinct materials.
—Mrigakshi Dixit, Interesting Engineering, 25 Mar. 2026
See All Example Sentences for furnace
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Maya Wilkins, Chicago Tribune, 1 Apr. 2026
With years of experience in the region, Restivo's has become a familiar name for customers seeking help with furnaces, boilers, air conditioning units and more.
—Community's Choice Awards, The Providence Journal, 28 Mar. 2026
The sun's core is a nuclear furnace of shredded atoms, and its inner two-thirds make up a radiative zone of gamma-ray photons, so the solar magnetic field cannot be generated there.
—Keith Cooper, Space.com, 26 Mar. 2026
Using a 10-liter reactor, heat and pressure were applied to turn soggy stillage into a fine black powder, which was then refined in a furnace into two distinct materials.
—Mrigakshi Dixit, Interesting Engineering, 25 Mar. 2026
See All Example Sentences for furnace
Cite this Entry
“Furnace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/furnace. Accessed 6 Apr. 2026.
Copy CitationKids Definition
furnace
noun
fur·nace
ˈfər-nəs 
: an enclosed structure in which heat is produced (as for heating a house or melting metals)
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