Definition of furnace
: an enclosed structure in which heat is produced (as for heating a house or for reducing ore)
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Recent Examples of furnace from the Web
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There is the bed-bug infestation, a hot-water heater that is slow to produce warm water and a furnace that fails nearly every night.
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The house has a newer oil furnace and features central air conditioning.
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Some New Englanders will be putting on the air conditioning just days after the furnace was cranking.
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Eda painted in a vacant factory space next door, and then, with help from PEF workers, fired each of the panels in the furnace at 1600 degrees for a few minutes.
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The smelter exported blocks of pure lead by taking used car batteries and extracting the lead from them using a special furnace.
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The furnaces were originally developed as a part of a Chinese military program to use weather modification for defense.
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Central Elementary School in Wilmette experienced some STEAM heat Friday that had nothing to do with the school’s furnace, and everything to do with students and their families using science, art and technology to create some springtime fun.
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The attempt to usurp confidential information from the furnace of American economic innovation is a story as old as Silicon Valley itself.
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.
Origin and Etymology of furnace
Middle English furnas, from Anglo-French forneise, from Latin fornac-, fornax; akin to Latin formus warm — more at therm
NEW! Time Traveler
First Known Use: 13th century
in the meaning defined above
See Words from the same yearFURNACE Defined for English Language Learners
Definition of furnace for English Language Learners
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: one for melting metals
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: one for heating a building or apartment
FURNACE Defined for Kids
Definition of furnace for Students
: an enclosed structure in which heat is produced (as for heating a house or melting metals)
Learn More about furnace
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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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