ice fog

FOG can be an acronym for...the tool "Flexible Object Generator"the tool "Fragmented-Object Generator"Fiber Optic Gulf - a submarine telecommunications cable linking the United Arab Emirates, Qatar, Bahrain, and KuwaitFibre optic gyroscopeFirst Osborne Group, a computer users' group dedicated to the Osborne-1 personal computer.Fear of GoogleForest Gate railway station, England; National Rail station code FOG.Free Online Games
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Fog is a cloud in contact with the ground. Fog differs from other clouds only in that fog touches the surface of the Earth. The same cloud that is not fog on lower ground may be fog where it contacts higher ground such as hilltops or mountain ridges. Fog is distinct from mist only in its density. Fog is defined as cloud which reduces visibility to less than 1 km, where as mist is that which reduces visibility to less than 2 km.
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Noun
1. a dense winter fog containing ice particles
(synonym) pogonip
(hypernym) fog