noun
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any device for supplying heat, such as a hot-air blower, radiator, convector, etc
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slang a pistol
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electronics a conductor carrying a current that indirectly heats the cathode in some types of valve
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of heater
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:
Adjust your electronics and water heater: Turn off computers, TVs and lights when not in use to eliminate ambient heat.
From MarketWatch ● Jun. 29, 2026
Stankiewicz credited Trojans pitching coach Sean Allen for helping Edwards, known for his rising heater, improve his curveball and develop his breaking ball.
From Los Angeles Times ● May 28, 2026
Astronaut Christina Koch said the so-called Universal Waste Management System was giving off "a burning heater smell."
From Barron's ● Apr. 9, 2026
The charity Community Action Northumberland suggested switching to an oil-filled electric radiator or electric heater to help with costs.
From BBC ● Mar. 26, 2026
She goes and checks the thermostat, to make sure I didn’t turn the heater on or anything.
From "Free Lunch" by Rex Ogle
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
The spacecraft has been rotated to face the sun to "bake off any ice" and heaters have been activated, "and we still see blockage," he said.
From Barron's ● Apr. 9, 2026
It’s also worth around $32,000 per customer gas meter in Orange Cove — more than enough for the community to install electric heat pumps, heat pump water heaters and induction stoves, zeroing out gas use.
From Los Angeles Times ● Feb. 16, 2026
In our outfit, Army trucks had no heaters and it used to get pretty cold in those cabs.
From "In Cold Blood" by Truman Capote
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
