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noun B1 Intermediate Uncommon

heater

HEE-tuh

Heater (noun) means a device that produces warmth, used to heat a room, building, or object. Example: “We plugged in the electric heater because the room was freezing.”

noun
1
A device that produces warmth, used to heat a room, building, or object.
"We plugged in the electric heater because the room was freezing."
2
Informal (US slang): a handgun.
"He said he saw the guy tuck a heater into his jacket."

How to use heater

Learner’s notes

In plain EnglishA device that gives off heat — or, in slang, a gun.

Common pairings
space heater electric heater turn on the heater

Word forms

heaters plural, Heaters plural

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We plugged in the electric _____ because the room was freezing.

Related words

Rhymes for heater

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Frequently asked questions

What does “heater” mean?

The word “heater” means a device that produces warmth, used to heat a room, building, or object. In plain terms, a device that gives off heat — or, in slang, a gun.

How do you pronounce “heater”?

“Heater” is pronounced HEE-tuh (/ˈhitɚ/ in IPA).

How do you use “heater” in a sentence?

Here is “heater” used in a sentence: “We plugged in the electric heater because the room was freezing.”

What part of speech is “heater”?

“Heater” is a noun.

Is “heater” a common word?

“Heater” is an uncommon word in modern English, usually learned at around the B1 level.

How many meanings does “heater” have?

“Heater” has 2 distinct senses listed in this dictionary. The most common is: a device that produces warmth, used to heat a room, building, or object.

What is the difference between a heater and a radiator?

A heater is a general term for any device that produces warmth to heat a room, building, or object, while a radiator specifically refers to a type of heater that uses hot water or steam circulating through metal panels. All radiators are heaters, but not all heaters are radiators.

Why is heater sometimes used as slang for a gun?

In US slang, heater is an informal term for a handgun. This usage is separate from the everyday meaning of a warming device and is mainly found in casual or crime-related speech.

What types of heater are there?

Heaters come in many forms, including electric space heaters, gas heaters, and radiators, all serving the core purpose of producing warmth for a room, building, or object. The specific type used often depends on the fuel source and the space being heated.

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Definitions: FreeDict original editorial