Pruinescence
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Pruinescence, or pruinosity, is a "frosted" or dusty-looking coating on top of a surface. It may also be called a pruina, from the Latin word for hoarfrost. The adjectival form is pruinose.
A cicada displaying ventral pruinescence
Mature male common whitetail with pruinescence covering the abdomen
Pruina on plums
Characteristic pruina on cap of Collybia phyllophila
Frost
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Frost is a layer of ice on a solid surface, which forms from water vapor that deposits onto a freezing surface. Frost forms when the air contains more water vapor than it can normally hold at a specif
Pruinescence
…or pruinosity, is a "frosted" or dusty-looking coating on top of a surface. It may also be called a pruina (plural: pruinae), from the Latin word for hoarfrost. The adjectival form is pruinose . In insects, a "bloom" caused by wax particles on top of an insect's cuticle covers up the underlying coloration…
A patch of grass showing three zones. crystalline frost in the below-freezing shade (blue, lower right) frost in the warming but still below freezing strip most recently exposed to sunlight (white, center) frost-free region: here, the previous frost has melted from a more prolonged exposure to sunlight (green, upper left.)
Frost in the highest town in Venezuela, Apartaderos: Because of its location in an alpine tundra ecosystem called páramo, a daily freeze-and-thaw cycle, sometimes described as "summer every day and winter every night", exists.
A spider web covered in air hoar frost
Air Hoar with ruler for scale