boiler

noun

boil·​er ˈbȯi-lər How to pronounce boiler (audio)
1
: one that boils
2
a
: a vessel used for boiling
b
: the part of a steam generator in which water is converted into steam and which consists usually of metal shells and tubes
c
: a tank in which water is heated or hot water is stored
d
chiefly British : furnace

Examples of boiler in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The research determined that across all countries including Vietnam and Bangladesh, electrification with steam-generating heat pumps leads to greater efficiency gains and energy savings than converting to electric steam or hot oil boilers. Amy Nguyen, Forbes.com, 24 Apr. 2025 Dozens of rank-and-file union members – pipefitters, boiler makers, painters, iron workers and others – took the mic after Dunn to urge lawmakers to spike SB 222. Calmatters, Oc Register, 16 Apr. 2025 There’s also evidence that the ship’s engineers left the boilers on, shoveling coal into the furnaces to keep electricity running. Theresa Braine, New York Daily News, 14 Apr. 2025 Magellan's images indicate the Titanic's crew kept the boilers going as the ship was sinking, the BBC says. George Petras, USA Today, 11 Apr. 2025 See All Example Sentences for boiler

Word History

First Known Use

circa 1540, in the meaning defined at sense 1

Time Traveler
The first known use of boiler was circa 1540

Cite this Entry

“Boiler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boiler. Accessed 30 Apr. 2025.

Kids Definition

boiler

noun
boil·​er ˈbȯi-lər How to pronounce boiler (audio)
1
: a container in which something is boiled
2
: a strong metal container used in making steam
3
: a tank in which water is heated or hot water is stored

More from Merriam-Webster on boiler

Last Updated: - Updated example sentences
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