needle ice
noun1
Needle-shaped columns of ice formed from groundwater by capillary action when the soil's surface temperature is above freezing and the air's surface temperature is below freezing.
noun
Needle-shaped columns of ice formed from groundwater by capillary action when the soil's surface temperature is above freezing and the air's surface temperature is below freezing.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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