- The definition of a fog is a mist of water vapor that is low to the ground, a mist of another liquid, or a state of confusion or blurred vision.
- An example of a fog is the cool gray cloud that covers San Francisco.
- An example of a fog is the little cloud of insect spray over a corn field.
- An example of a fog is what someone feels after a head injury.
- To fog is defined as to blur, confuse or cover with fog.
- An example of fog is to have the steam from your shower cloud the mirror in the bathroom.
- An example of fog is to tell someone so much new information that they can't keep it straight.
- An example of fog is to fill a dance floor with artificial clouds using a machine.
Fog surrounds the Golden Gate bridge in San Francisco.Licensed from iStockPhoto
- a large mass of water vapor condensed to fine particles, at or just above the earth's surface; thick, obscuring mist
- a similar mass of smoke, dust, etc. obscuring the atmosphere
- a vaporized liquid, as insecticide, dispersed over a large area
- a state of mental dimness and confusion; blurred, bewildered state
- a grayish area on a photograph or film
Origin: probably ; from Scandinavian as inch(es) Old Norse fok, Danish (sne)fog, driving snow, Norwegian dialect, dialectal fuka, sea mist ; from Indo-European base an unverified form pū-, to puff up, blow, of echoic origin, originally
- to become surrounded or covered by fog
- to be or become blurred, dimmed, or obscured
- to surround or cover with fog
- to blur; dim; obscure
- to confuse; bewilder
- Slang to hurl (a baseball, etc.)
- to make (a photograph, etc.) grayish in certain areas
- a new growth of grass after cutting or grazing
- long, rank grass left uncut or left standing
- Scot. moss
Origin: Middle English fogge, probably ; from Scandinavian as inch(es) Norwegian dialect, dialectal fogg, long grass inch(es) moist place, akin to German feucht, damp: see fen
Used by arrangement with John Wiley & Sons, Inc.
- Condensed water vapor in cloudlike masses lying close to the ground and limiting visibility.
- a. An obscuring haze, as of atmospheric dust or smoke.b. A mist or film clouding a surface, as of a window, lens, or mirror.
- A cloud of vaporized liquid, especially a chemical spray used in fighting fires.
- a. A state of mental vagueness or bewilderment.b. Something that obscures or conceals; a haze: shrouded their actions in a fog of disinformation.
- A blur on a developed photographic image.
- To cover or envelop with or as if with fog.
- To cause to be obscured; cloud.
- To make vague, hazy, or confused: a memory that had been fogged by time.
- To obscure or dim (a photographic image).
- To be covered with or as if with fog.
- To be blurred, clouded, or obscured: My glasses fogged in the warm air.
- To be dimmed or obscured. Used of a photographic image.
Origin: Perhaps of Scandinavian origin.
- fogˈger noun
- A new growth of grass appearing on a field that has been mowed or grazed.
- Tall, decaying grass left standing after the cutting or grazing season.
Origin: Middle English fogge, tall grass; see pū̆- in Indo-European roots.
fog - Phrases/Idioms
fog - Science Definition
- 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.
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