fur·​nace | \ˈfər-nəs \

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

The heat comes from a natural gas furnace that produces steam. Scott K. Johnson, Ars Technica, "Machines that suck CO₂ from the air might be cheaper than we thought," 7 June 2018 Crucibles and pharmaceutical jars littered the floor, along with bits of brick from a special furnace. Andrew Lawler, Science | AAAS, "Archaeologists start a new hunt for the fabled Lost Colony of the New World," 6 June 2018 Otherwise, fit in same room as appliance or somewhere central (hallway, landing), at head height, at least one yard from furnace, fire, or heater and not directly above anything that gives off steam. The Editors Of House Beautiful, House Beautiful, "How to Install a Smoke Detector," 12 Feb. 2015 Following a series of missteps — contractors who didn’t understand the full scope of the problem, old pipes not meshing with a new boiler — the crisis came to a head in late December, when the boiler froze, and furnaces and pipes burst. Anya Van Wagtendonk, Philly.com, "To save the world, first they must save a building in West Philly," 12 July 2018 The children reach into the furnace, but the light is still slipping to the floor. Lauren Goode, WIRED, "AI Made a Movie—and the Results Are Horrifyingly Encouraging," 11 June 2018 Today, his property is piled with materials waiting to become sculpture: the barrel from a dryer, reclaimed wooden palettes, old furnace parts. New York Times, "A California Sculptor Gets His Moment in the Sun, at Age 80," 28 June 2018 Van Cuylenborg and Cook were killed after traveling to Seattle from Saanich, British Columbia, to buy furnace parts for a business that Cook's father owned. Robert Gearty, Fox News, "Murder charges filed against man linked to Seattle area 1987 double homicide through DNA," 18 June 2018 One of us hides peanut butter and jelly sandwiches in the furnace vent. Kevin Fisher-paulson, San Francisco Chronicle, "With my teenagers, it’s my fault that everything’s my fault," 29 May 2018

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.

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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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Dictionary Entries near furnace





furnace black


furnace oil

Statistics for furnace

Last Updated

5 Nov 2018

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Time Traveler for furnace

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

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More Definitions for furnace



English Language Learners Definition of furnace

: one for melting metals

: one for heating a building or apartment


fur·​nace | \ˈfər-nəs \

Kids Definition of furnace

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

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More from Merriam-Webster on furnace

Spanish Central: Translation of 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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