: 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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Take a look → Mysterious wooden train car — almost 100 years old — unearthed in Belgium, photos show
The 1,900-year-old Roman ruins included several furnaces used for processing iron ore and other evidence of ancient metalworking, archaeologists said.
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Aspen Pflughoeft, Miami Herald, 2 Apr. 2024
Even in the states with the dirtiest power grids, replacing your gas furnace or boiler with an electric heat pump will reduce climate pollution in the long term.
—Sammy Roth, Los Angeles Times, 12 Mar. 2024
Most filters feature arrow markings that indicate the correct placement; these arrows should typically point toward the furnace in the direction of the airflow.
—Jessica Bennett, Better Homes & Gardens, 19 Mar. 2024
That’s because hemoglobin, the protein in red blood cells that carries oxygen around the body to activate our inner furnace, requires iron in its construction.
—Max Bennett, Discover Magazine, 8 Feb. 2024
Be sure to check the manufacturer's instructions to determine the best way to clean your air conditioner or furnace filter, but the steps below will work for most reusable filters.
—Jessica Bennett, Better Homes & Gardens, 19 Mar. 2024
There were golf clubs and guitars and, somehow, furnaces.
—Paige Williams, The New Yorker, 18 Mar. 2024
Like my furnace contractor struggling to understand my puzzling radiators, spinning your wheels searching for or recreating valuable knowledge is wasteful, demoralizing and bad for business.
—Ann Kowal Smith, Forbes, 26 Feb. 2024
Red mud is deposited in an electric arc furnace, where it is subjected to the extremely high temperatures of a plasma containing 10 percent hydrogen.
—Andrew Paul, Popular Science, 7 Feb. 2024
Aspen Pflughoeft, Miami Herald, 2 Apr. 2024
Even in the states with the dirtiest power grids, replacing your gas furnace or boiler with an electric heat pump will reduce climate pollution in the long term.
—Sammy Roth, Los Angeles Times, 12 Mar. 2024
Most filters feature arrow markings that indicate the correct placement; these arrows should typically point toward the furnace in the direction of the airflow.
—Jessica Bennett, Better Homes & Gardens, 19 Mar. 2024
That’s because hemoglobin, the protein in red blood cells that carries oxygen around the body to activate our inner furnace, requires iron in its construction.
—Max Bennett, Discover Magazine, 8 Feb. 2024
Be sure to check the manufacturer's instructions to determine the best way to clean your air conditioner or furnace filter, but the steps below will work for most reusable filters.
—Jessica Bennett, Better Homes & Gardens, 19 Mar. 2024
There were golf clubs and guitars and, somehow, furnaces.
—Paige Williams, The New Yorker, 18 Mar. 2024
Like my furnace contractor struggling to understand my puzzling radiators, spinning your wheels searching for or recreating valuable knowledge is wasteful, demoralizing and bad for business.
—Ann Kowal Smith, Forbes, 26 Feb. 2024
Red mud is deposited in an electric arc furnace, where it is subjected to the extremely high temperatures of a plasma containing 10 percent hydrogen.
—Andrew Paul, Popular Science, 7 Feb. 2024
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'furnace.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Furnace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/furnace. Accessed 19 Apr. 2024.
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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