de·​fog (ˌ)dē-ˈfȯg How to pronounce defog (audio)
defogged; defogging; defogs

transitive verb

: to remove fog or condensed moisture from
defog a windshield
defogger noun

Examples of defog in a Sentence

Recent Examples on the Web Just hover a finger close to the mirror’s control panel or use the app to turn the fixture on, adjust the brightness or defog the glass after a steamy shower. Matthew Kronsberg, WSJ, 21 Jan. 2022 Zeroing in on how the virus invades and affects the brain has the potential to defog the window into long Covid, an illness that doctors so far have been unable to appropriately define, diagnose or treat. NBC News, 4 Nov. 2021 At this point the touchscreen dies, taking with it functions like the car's backup camera, the ability to defog the windows, and also the audible alerts and chimes for the driver aids and turn signals. Jonathan M. Gitlin, Ars Technica, 17 Nov. 2020 The manual includes step-by-step instructions and photos for how to make the masks, but also how to clean them and defog them. Evan Casey, Milwaukee Journal Sentinel, 1 May 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'defog.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1904, in the meaning defined above

Time Traveler
The first known use of defog was in 1904

Dictionary Entries Near defog

Cite this Entry

“Defog.” Dictionary, Merriam-Webster, Accessed 3 Mar. 2024.

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