Meaning of FOG in English


I. ˈfȯg, fäg noun

Etymology: probably back-formation from foggy

Date: 1544


a. : 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


a. : 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·less -ləs adjective

II. verb

( fogged ; fog·ging )

Date: 1599

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 (as a photographic film) during development

intransitive verb

1. : to become covered or thick with fog


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

b. : to become indistinct through exposure to light or radiation

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.