a cloudlike mass or layer of minute water droplets or ice crystals near the surface of the earth, appreciably reducing visibility.
any darkened state of the atmosphere, or the diffused substance that causes it.
a state of mental confusion or unawareness; daze; stupor: The survivors were in a fog for days after the catastrophe.
Photography a hazy effect on a developed negative or positive, caused by light other than that forming the image, by improper handling during development, or by the use of excessively old film.
Physical Chemistry a mixture consisting of liquid particles dispersed in a gaseous medium.