a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth, appreciably reducing visibility.Compare ice fog, mist, smog.
any darkened state of the atmosphere, or the diffused substance that causes it.
a state of mental confusion or unawareness; daze; stupor: The survivors were in a fog for days after the catastrophe.
Photography. a hazy effect on a developed negative or positive, caused by light other than that forming the image, by improper handling during development, or by the use of excessively old film.
Physical Chemistry. a mixture consisting of liquid particles dispersed in a gaseous medium.
verb (used with object),fogged,fog·ging.
to cover or envelop with or as if with fog: The steam in the room fogged his glasses.
to confuse or obscure: The debate did little else but fog the issue.
to bewilder or perplex: to fog the mind.
Photography. to produce fog on (a negative or positive).
verb (used without object),fogged,fog·ging.
to become enveloped or obscured with or as if with fog.
Photography. (of a negative or positive) to become affected by fog.
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Origin of fog
1
First recorded in 1535–45; perhaps by back formation from foggy. See fog2
It marks a new beginning, escorts us through our mental fog, and gets us safely into the next phase of our day.
The best quick-brew coffee machines|PopSci Commerce Team|September 10, 2020|Popular Science
The fog of uncertainty caused by the coronavirus pandemic continues to loom — and now that sense of foreboding unknown is starting to affect the norms of fall marketing.
‘We really don’t know’: How the continued uncertainty is shaking up the usual fall ad marketplace|Kristina Monllos|August 31, 2020|Digiday
This might explain why stepping outside on a bright sunny day helps clear the fog from your head.
Explainer: How our eyes make sense of light|Tina Hesman Saey|July 16, 2020|Science News For Students
That’s because if you’re near fog, you’re probably inside it.
Explainer: Rainbows, fogbows and their eerie cousins|Matthew Cappucci|May 1, 2020|Science News For Students
There I was high enough up to have fog both above and below me.
Explainer: Rainbows, fogbows and their eerie cousins|Matthew Cappucci|May 1, 2020|Science News For Students
A fog of conspiracy—of logic against logic, as Orwell put it—has descended on every major event in the war.
Digital Doublethink: Playing Truth or Dare with Putin, Assad and ISIS|Christopher Dickey, Anna Nemtsova|November 16, 2014|DAILY BEAST
So we changed that into a fog machine blast right before I go on.
Oscars Host Neil Patrick Harris on His Best and Worst Emcee Moments (VIDEO)|Neil Patrick Harris|October 15, 2014|DAILY BEAST
“Our main job is to come in there, cut through the fog of war, and establish what has happened,” said Solvang.
'E-Team': James Foley's Last Film|Marlow Stern|August 21, 2014|DAILY BEAST
I was just myself again—the person I was meant to be, without the fog.
We're Talking About Depression All Wrong|Jean Kim|August 20, 2014|DAILY BEAST
At Henley, the other vaporium, the crew lying around on settees and filling the room with fog brought back Dutch flashbacks.
This Is Your E-Cigarette on Drugs|Daniel Genis|July 28, 2014|DAILY BEAST
Usually the scoundrels come skulking along masked by a fog, as though ashamed of themselves, as they ought to be.
From Sail to Steam, Recollections of Naval Life|Captain A. T. Mahan
The trees are bare, but their buds are swelling and these days of cold and fog and rain must come to make them burst in glory.
The Sins of the Father|Thomas Dixon
At the same moment a prolonged crackling broke out in the fog in front.
The King in Yellow|Robert W. Chambers
Here the fog had so far lightened as to enable the officers to swing the ship.
Fragments of science, V. 1-2|John Tyndall
Then she remembered: the fog must have rolled in from the near-by river and entered the room through the window.
The Downfall|Emile Zola
British Dictionary definitions for fog (1 of 2)
fog1
/ (fɒɡ) /
noun
a mass of droplets of condensed water vapour suspended in the air, often greatly reducing visibility, corresponding to a cloud but at a lower level
a cloud of any substance in the atmosphere reducing visibility
a state of mental uncertainty or obscurity
photoga blurred or discoloured area on a developed negative, print, or transparency caused by the action of extraneous light, incorrect development, etc
a colloid or suspension consisting of liquid particles dispersed in a gas
verbfogs, foggingorfogged
to envelop or become enveloped with or as if with fog
to confuse or become confusedto fog an issue
photogto produce fog on (a negative, print, or transparency) or (of a negative, print, or transparency) to be affected by fog
Word Origin for fog
C16: perhaps back formation from foggy damp, boggy, from fog ²
British Dictionary definitions for fog (2 of 2)
fog2
/ (fɒɡ) /
noun
a second growth of grass after the first mowing
grass left to grow long in winter
Word Origin for fog
C14: probably of Scandinavian origin; compare Norwegian fogg rank grass
A dense layer of cloud lying close to the surface of the ground or water and reducing visibility to less than 1 km (0.62 mi). Fog occurs when the air temperature becomes identical, or nearly identical, to the dew point.
An opaque or semiopaque condensation of a substance floating in a region or forming on a surface.