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|Noun||1.||frost snow - small crystals of ice |
downfall, precipitation - the falling to earth of any form of water (rain or snow or hail or sleet or mist)
H2O, water - binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent
crystal - a solid formed by the solidification of a chemical and having a highly regular atomic structure