I. ˈfȯg, fäg noun
Etymology: probably back-formation from foggy
Date: 1544
1.
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
3.
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
2.
a. : to become blurred by a covering of fog or mist
b. : to become indistinct through exposure to light or radiation