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Synonyms

heater

American  
[hee-ter] / ˈhi tər /

noun

  • heaters
    plural
  1. any of various apparatus for heating, especially for heating water or the air in a room.

  2. Electronics. the element of a vacuum tube that carries the current for heating a cathode.

  3. Slang. a pistol, revolver, or other firearm.


heater British  
/ ˈhiːtə /

noun

  1. any device for supplying heat, such as a hot-air blower, radiator, convector, etc

  2. slang a pistol

  3. electronics a conductor carrying a current that indirectly heats the cathode in some types of valve

"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 heater

First recorded in 1490–1500; heat + -er 1


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.

See Examples For:

About $12,000 went toward the wedding, and the rest went into the house, which has since eaten a new water heater and a roof repair nobody warned us about.

From MarketWatch ● Nov. 2, 2026

Then Snell left a 98 mph heater in the middle of the zone—and Bauers pounced, sending the ball 412 feet deep into the right-field seats, silencing the raucous Dodger Stadium crowd.

From The Wall Street Journal ● Oct. 15, 2026

"The fire started accidentally resulting from a mechanical or connection-related failure of a portable gas heater and gas bottle resulting in an uncontrolled gas release."

From BBC ● Oct. 7, 2026

One has doors, a heater and a glass sunroof.

From The Wall Street Journal ● Oct. 2, 2026

She pulled Natalie in close, and they hid as best they could in the lee of a solar water heater.

From "Two Degrees" by Alan Gratz

Nibe heaters are used in the production of higher-performance semiconductors.

From The Wall Street Journal ● Aug. 21, 2026

In the last 25 years, a new roof was installed, as well as air conditioning units and water heaters.

From MarketWatch ● Aug. 21, 2026

Engineers must carefully reduce energy use by shutting off heaters and instruments while also preventing the spacecraft from becoming so cold that its fuel lines freeze.

From Science Daily ● May 4, 2026

Temperature and humidity used to be monitored manually, but today sensors and automated systems automatically adjust an array of fans, heaters, and humidifiers.

From BBC ● Apr. 23, 2026

To test, I shut down the heaters in the regulator and noted its power consumption.

From "The Martian" by Andy Weir

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