crystalline frost

crystalline frost

[′kris·tə·lən ′frȯst]
(hydrology)
Hoarfrost that exhibits a relatively simple macroscopic crystalline structure.
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As Spring arrives in Geneva, the city bids goodbye to the days of crystalline frost and takes on the brilliance of flowers and greenery, making a stroll around the city's many outdoor activities an attractive pastime for visitors and residents alike.