sleet (redirected from sleets)

sleet, precipitation of small, partially melted grains of ice. As raindrops fall from clouds, they pass through layers of air at different temperatures. If they pass through a layer with a temperature below the freezing point, they turn into sleet. Snowflakes that have melted by passing through a warm layer will turn into sleet if they then pass through a freezing layer. Sleet often falls together with snow and rain, and may deposit an icy coating on exposed surfaces. Sleet occurs only during the winter, while hail, a different form of icy precipitation, may fall at any time of the year.

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sleet

1. partly melted falling snow or hail or (esp US) partly frozen rain

2. Chiefly US the thin coat of ice that forms when sleet or rain freezes on cold surfaces