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snow grains[′snō ‚grānz]
Precipitation in the form of very small, white opaque particles of ice; the solid equivalent of drizzle; the grains resemble snow pellets in external appearance, but are more flattened and elongated, and generally have diameters of less than 1 millimeter; they neither shatter nor bounce when they hit a hard surface. Also known as granular snow.
The precipitation of very small white and opaque grains of ice. These grains are fairly flat or elongated; their diameter is generally less than 0.04 in (1 mm).