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- Dictionaryblack frost
noun
- 1. frost which does not have a white surface.
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noun. a frost without snow or rime that is severe enough to blacken vegetation. Collins English Dictionary. Copyright © HarperCollins Publishers. black frost in American English. a severe freezing that blackens growing plants without a visible frost. Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt.
Article History. hoarfrost. Related Topics: frost point, temperature, below 0° C (32° F), at which moisture in the air will condense as a layer of frost on any exposed surface.
Black frost definition: intense cold without hoarfrost, causing vegetation to turn black.. See examples of BLACK FROST used in a sentence.
The meaning of BLACK FROST is frost or cold so intense as to blacken vegetation and usually unaccompanied by hoarfrost.
Quick Reference. A frost that occurs without the formation of hoar-frost crystals (i.e. when the atmosphere is dry) and which produces extensive damage and blackening of plants (hence the name).
Black frost or ("killing frost") is not strictly speaking frost at all, because it is the condition seen in crops when the humidity is too low for frost to form, but the temperature falls so low that plant tissues freeze and die, becoming blackened, hence the term "black frost".
Black Frost definition: A dry freeze without the protective formation of hoarfrost that results in the internal freezing and death of vegetation.
Jan 1, 2016 · A “black” frost occurs when temperature falls below 0°C and no ice forms on the surface. If the humidity is sufficiently low, then the surface temperature does not reach the ice point temperature and no frost forms.
A frost that occurs without the formation of hoar-frost crystals (i.e. when the atmosphere is dry) and which produces extensive
It is known as black frost because the naked eye can see how the plant rots and turns black. If the damage is so strong that it affects the conditioning parts of the plant, it will die. Sometimes if we protect them enough or the frost doesn't last too long, they can survive.
