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fog

1
[ fog, fawg ]
/ fɒg, fɔg /
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noun
verb (used with object), fogged, fog·ging.
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

synonym study for fog

3. See cloud.

OTHER WORDS FROM fog

fogless, adjectiveun·fogged, adjectiveun·fog·ging, adjective

Other definitions for fog (2 of 2)

fog2
[ fog, fawg ]
/ fɒg, fɔg /

noun U.S. and British Dialect.
a second growth of grass, as after mowing.
long grass left standing in fields during the winter.

Origin of fog

2
First recorded in 1300–50; Middle English fogge, from Scandinavian; compare Norwegian fogg “long, scattered grass on damp ground”; further origin uncertain; see also foggy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use fog in a sentence

British Dictionary definitions for fog (1 of 2)

fog1
/ (fɒɡ) /

noun
verb fogs, fogging or fogged

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
  1. a second growth of grass after the first mowing
  2. grass left to grow long in winter

Word Origin for fog

C14: probably of Scandinavian origin; compare Norwegian fogg rank grass
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for fog

fog
[ fôg ]

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Other Idioms and Phrases with fog

fog

see in a fog.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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