Dictionary.com
Thesaurus.com
Synonyms

furnace

American  
[fur-nis] / ˈfɜr nɪs /

noun

furnaces plural
  1. a structure or apparatus in which heat may be generated, as for heating houses, smelting ores, or producing steam.

  2. a place characterized by intense heat.

    The volcano was a seething furnace.

  3. Astronomy. Furnace, the constellation Fornax.


verb (used with object)

furnaced, furnacing
  1. to heat (a metal piece) in a furnace.

furnace British  
/ ˈfɜːnɪs /

noun

  1. an enclosed chamber in which heat is produced to generate steam, destroy refuse, smelt or refine ores, etc

  2. a very hot or stifling place

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of furnace

First recorded in 1175–1225; Middle English furneis, furnais, from Old French fornais, fournais, from Latin fornāc- (stem of fornāx “kiln, oven”), akin to formus “warm”

Explanation

A furnace is an appliance that heats houses and buildings by burning fuel or circulating hot water. Your furnace might rumble in the basement, sending heat up through your house's radiators. Most houses in cold climates have a furnace, to warm their rooms during the chilly months of the year. Furnaces also have industrial uses, like burning trash or extracting ore from metal. If someone says, "It's as hot as a furnace in this classroom!" they mean that it's extremely hot. Furnace comes from the Old French fornaise, "oven," with the Latin root word fornacem, "oven or kiln."

Keep Reading on Vocabulary.com

Vocabulary lists containing furnace

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The view on a trip to the Fiery Furnace canyon in Arches National Park, Utah.

From Los Angeles Times • Apr. 18, 2024

The so-called Blazing Furnace campaign has touched the highest echelons of Vietnamese politics.

From Seattle Times • Apr. 11, 2024

“What DNA does for the first time is connect a living, 21st century family not just to Catoctin but to the actual cemetery,” says Catoctin Furnace Historical Society archaeologist Elizabeth Comer.

From Science Magazine • Feb. 17, 2024

Traffic Wales said the A487 between Machynlleth and Furnace was also closed due to flooding.

From BBC • Dec. 25, 2023

Talgol, who had long possest Enflamed Rage in glowing Breast, Which now began to rage, and burn as Implacably as Flame in Furnace.

From An Essay on Criticism by Oldmixon, John

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "furnace" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com