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

Definition of defog

transitive verb

: to remove fog or condensed moisture from defog a windshield

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Other Words from defog

defogger noun

Examples of defog in a Sentence

Recent Examples on the Web 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, "After 12,523 replacements, Feds investigate Tesla Media Control Unit failures," 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, "A Wauwatosa woman is creating see-through masks to help the deaf community with reading facial expressions," 1 May 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'defog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of defog

1904, in the meaning defined above

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Cite this Entry

“Defog.” Dictionary, Merriam-Webster, Accessed 2 Mar. 2021.

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More Definitions for defog



English Language Learners Definition of defog

US : to remove mist from (a window, mirror, etc.) by using dry heat

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