fog

noun
\ˈfȯg, fäg\

Definition of fog 

(Entry 1 of 2)

1a : vapor condensed to fine particles of water suspended in the lower atmosphere that differs from cloud only in being near the ground

b : a fine spray or a foam for firefighting

2 : a murky condition of the atmosphere or a substance causing it

3a : a state of confusion or bewilderment spent the morning in a fog

b : something that confuses or obscures hid behind a fog of rhetoric

4 : cloudiness or partial opacity in a developed photographic image caused by chemical action or stray radiation

fog

verb
fogged; fogging

Definition of fog (Entry 2 of 2)

transitive verb

1 : to cover, envelop, or suffuse with or as if with fog fog the barns with pesticide

2 : to make obscure or confusing accusations which fogged the real issues

3 : to make confused

4 : to produce fog on (something, such as a photographic film) during development

intransitive verb

1 : to become covered or thick with fog

2a : to become blurred by a covering of fog or mist

b : to become indistinct through exposure to light or radiation

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Other Words from fog

Noun

fogless \ ˈfȯg-​ləs , ˈfäg-​ \ adjective

Examples of fog in a Sentence

Noun

Heavy fog made it difficult to see the road. a climate marked by heavy fogs The fog reduced visibility to a quarter of a mile. This problem has me in a fog.

Verb

The steam from the pot was fogging the window near the stove. The bathroom was all fogged up after my shower. politicians who try to fog the issue instead of taking a stand
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Recent Examples on the Web: Noun

Both provide an awakening jolt—and one that’s sure to clear up any mental fog. Zoe Ruffner, Vogue, "These Natural Energy Boosters Are the Cure for a Midday Slump," 24 Oct. 2018 This genuinely becomes a safety hazard because heat is needed to remove ice and fog build-up on your windshield—not to mention that extreme cold is extremely uncomfortable. Zachary Palmer, Popular Mechanics, "How To Fix Your Car's Heater," 6 Sep. 2018 There's even an anti-fog mirror for shaving or plucking. Maria Cassano, Allure, "The 15 Best Shower Organizers You Can Get Online Right Now," 5 Aug. 2018 The fog layer looks like a pearl sea that extends for miles to the western horizon. Tom Stienstra, SFChronicle.com, "’Tis the season for ‘Dancing with Fog’," 12 July 2018 Residents in the picturesque area — towering pines mix with stands of banana trees, and ethereal banks of fog roll through the hills — eke out livelihoods off small coffee plantations and ranching. Patrick J. Mcdonnell, latimes.com, "'What if I lose her forever?' In Guatemala, a couple fears for their child still in detention in U.S.," 10 July 2018 Roadside Specialties LLC of Blackshear won the $498,256 contract to fog-seal and restripe 11 miles of the interstate, including 8.2 miles of pavement marking upgrades from Sixes Road in Holly Springs to the Etowah River in Canton. David Ibata, ajc, "GDOT to restripe I-575 in Cherokee County," 6 July 2018 The haze and shadows are a fog of time and recrimination not ready to lift. Cate Mcquaid, BostonGlobe.com, "At PEM, Sally Mann stays outside the comfort zone," 12 July 2018 As soon as the ball hit the net, footage of the crowd shows the ensuing celebration — including a veritable fog of beer spritzing everyone as fans splashed their beverages in the air in unfettered jubilation. Raisa Bruner, Time, "English Soccer Fans Already Wasted a Lot of of Beer Before Winning the World Cup Semifinals," 11 July 2018

Recent Examples on the Web: Verb

The Reflection, Celebrity’s largest ship, even offers a suite with a glass shower cantilevered out over the sea (don't worry about peeping Toms; the glass digitally fogs for privacy). Condé Nast Traveler, "The Best Cruise Lines in the World: 2018 Readers' Choice Awards," 9 Oct. 2018 In the run-up to the crisis, a housing surplus prompted mortgage lenders to issue loans to anyone who could fog a mirror just to fill the excess inventory. Jeff Andrews, Curbed, "10 years after the financial crisis, is the housing market still at risk?," 29 Aug. 2018 In its place, the raptors come to the kitchen door and snort, fogging up the window as only a warm-blooded animal can do. NBC News, "'Jurassic World': Paleontologist who inspired Alan Grant role talks real-life dino science," 20 June 2018 But his profile is solemn: a sharp jawline, chin raised and jutted, tinted sunglasses that appear more fogged-over than tinted, hair sheared short, perhaps by an electric razor. New York Times, "The Artists Who Brought Asian-Americans Into the Annals of Contemporary Art," 12 Apr. 2018 The Wildcat webcam late Monday afternoon was fogged in, with just a few trees showing in the foreground. Katie Camero, BostonGlobe.com, "Here’s a cool thought: There’s still snow on Mount Washington," 2 July 2018 Instead, Jurassic Park featured the raptors fogging a kitchen window with their breath before opening the kitchen door — something only warm-blooded animals could do. Alessandra Potenza, The Verge, "Were real dinosaurs as bulletproof as the one in Jurassic World: Fallen Kingdom?," 19 June 2018 Read More Worker saw a 'fogged up' car in a parking lot. Kaitlyn Schwers, kansascity, "They left 13 dogs in a hot car for hours, Missouri cops say. Now they face charges," 31 May 2018 The family hiked up and skied above the lift line, the sandwiches in their pockets fogging the cellophane. Naomi Fry, The New Yorker, "Rachel Kushner’s Immersive Fiction," 23 Apr. 2018

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

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First Known Use of fog

Noun

1544, in the meaning defined at sense 1a

Verb

circa 1592, in the meaning defined at transitive sense 1

History and Etymology for fog

Noun

probably back-formation from foggy

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Learn More about fog

Dictionary Entries near fog

foetid

foeto-

fofarraw

fog

fogas

fogbank

fog belt

Statistics for fog

Last Updated

13 Nov 2018

Look-up Popularity

Time Traveler for fog

The first known use of fog was in 1544

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More Definitions for fog

fog

noun

English Language Learners Definition of fog

 (Entry 1 of 2)

: many small drops of water floating in the air above the ground, the sea, etc.

: a state of mental confusion

fog

verb

English Language Learners Definition of fog (Entry 2 of 2)

: to cover or fill (something) with small drops of water : to make (something) foggy

: to become foggy

: to make (someone or something) confused

fog

noun
\ˈfȯg, ˈfäg\

Kids Definition of fog

 (Entry 1 of 2)

1 : tiny drops of water floating in the air at or near the ground

2 : a confused state of mind I woke up in a fog.

fog

verb
fogged; fogging

Kids Definition of fog (Entry 2 of 2)

: to cover or become covered with tiny drops of water Steam from the shower fogged the mirror.

\ˈfäg, ˈfȯg \
fogged; fogging

Medical Definition of fog 

: to blur (a visual field) with lenses that prevent a sharp focus in order to relax accommodation before testing vision

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Comments on fog

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