freezing nuclei

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freezing nuclei Any nuclei, commonly ice crystals but sometimes the suitably shaped crystals of other substances, that when present in clouds at temperatures below 0°C will cause any supercooled droplets with which they collide to change to ice (in the form of a crystalline growth upon the nucleus). See also NUCLEUS. Compare ICE NUCLEUS.

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freezing nuclei Any nuclei, commonly ice crystals but sometimes the suitably shaped crystals of other substances, which, when present in clouds at temperatures below 0°C, will cause any supercooled droplets with which they collide to change to ice (in the form of a crystalline growth upon the nucleus).