defroster
noun
de·frost·er
di-ˈfrȯ-stər 
ˈdē-ˌfrȯ-
plural defrosters
: a person or thing that defrosts something
She was a cook. I was an opener of cans, a defroster of TV dinners.—
Bernie Schiffer
Bernie Schiffer
especially
: a device or system designed to heat a window or windshield of a vehicle for the purpose of removing accumulated ice or moisture
The rear window defroster worked well in the center, but it needs more grid lines for full coverage. —Consumer Reports
Consumer Reports Their breath fogged the windshield immediately, and Gus slowed to a crawl on the winding street, reaching down to adjust the wipers and the defroster. —Frank Conroy
Frank Conroy Examples of defroster in a Sentence
Recent Examples on the Web
But there’s still a lot to make heat pumps better–closing up leaks in heat exchangers, controlling the speed of compressors, setting up defrosters to only defrost when needed, and even testing out how placing thermostats and other equipment in the home can impact a heat pump’s efficiency.
—Sara Kiley Watson, Popular Science, 2 Oct. 2025
The defroster and defogger system shuts off during certain HVAC system faults, such as electrical compressor failure, due to the programming of the HVAC and ECU software, according to the recall report.
—James Powel, USA Today, 15 Sep. 2025
Vic lowers his head to peer through the slot of visibility provided by the muttering dashboard defroster.
—Literary Hub, 10 June 2025
The modern oven tends to be a Swiss Army knife for the kitchen counter—not just a toaster but also an air fryer, broiler, slow cooker, dehydrator, defroster, re-crisper of pizza, and maybe even a sous-vide cooker.
—Matthew Korfhage, WIRED, 26 Feb. 2025
See All Example Sentences for defroster
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.
Sara Kiley Watson, Popular Science, 2 Oct. 2025
The defroster and defogger system shuts off during certain HVAC system faults, such as electrical compressor failure, due to the programming of the HVAC and ECU software, according to the recall report.
—James Powel, USA Today, 15 Sep. 2025
Vic lowers his head to peer through the slot of visibility provided by the muttering dashboard defroster.
—Literary Hub, 10 June 2025
The modern oven tends to be a Swiss Army knife for the kitchen counter—not just a toaster but also an air fryer, broiler, slow cooker, dehydrator, defroster, re-crisper of pizza, and maybe even a sous-vide cooker.
—Matthew Korfhage, WIRED, 26 Feb. 2025
See All Example Sentences for defroster
Cite this Entry
“Defroster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/defroster. Accessed 4 Nov. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share