fur·​nace | \ ˈfər-nəs How to pronounce furnace (audio) \

Definition of furnace

: an enclosed structure in which heat is produced (as for heating a house or for reducing ore)

Examples of furnace in a Sentence

Recent Examples on the Web Nearly all those nuts are harvested on more than 6,000 farms in the Central Valley — a flat, arid zone characterized by relentless sunshine, furnace-like summer heat and some of the most prodigious soils on earth. New York Times, 20 Apr. 2022 Close by is the home’s formal dining room with its table for 18, a separate snooker room and an oversized live-in kitchen complete with fireplace, dining table and furnace-like electric Aga cooking range. Howard Walker, Robb Report, 29 Mar. 2022 If your furnace or boiler is more than 15 years old, and your heat pump or air conditioner is more than 12 years old, consider replacing it with a new energy-efficient model. Kaylei Fear, Better Homes & Gardens, 15 Mar. 2022 Here was evidence that a person could be his own furnace. Jessica Wapner, The New Yorker, 18 Feb. 2022 Your next new furnace may be significantly more expensive, thanks to regulatory changes percolating through the Biden DOE bureaucracy. Ben Lieberman, WSJ, 20 Jan. 2022 Elevate or flood-proof your furnace and/or air-conditioning system. Washington Post, 4 Jan. 2022 Her granddaughter, Madison, dressed as Alice H. Parker, a Howard University alum who invented the first gas furnace powered by natural gas. Duante Beddingfield, Detroit Free Press, 11 Mar. 2022 It’s a cube consisting of four to five off-the-shelf furnace filters topped by a standard box fan blowing outward. Douglas Hannah, Smithsonian Magazine, 7 Mar. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'furnace.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of furnace

13th century, in the meaning defined above

History and Etymology for furnace

Middle English furnas, from Anglo-French forneise, from Latin fornac-, fornax; akin to Latin formus warm — more at therm

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Time Traveler for furnace

Time Traveler

The first known use of furnace was in the 13th century

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Dictionary Entries Near furnace



furnace black

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Statistics for furnace

Last Updated

11 May 2022

Cite this Entry

“Furnace.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/furnace. Accessed 26 May. 2022.

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More Definitions for furnace


fur·​nace | \ ˈfər-nəs How to pronounce furnace (audio) \

Kids Definition of furnace

: an enclosed structure in which heat is produced (as for heating a house or melting metals)

More from Merriam-Webster on furnace

Nglish: Translation of furnace for Spanish Speakers

Britannica English: Translation of furnace for Arabic Speakers

Britannica.com: Encyclopedia article about furnace


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