Definition of cloud base in English:

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cloud base


[in singular]
The level or altitude of the lowest part of a general mass of clouds.
Example sentences
  • So what happens when you have fog, or the cloud base is at ground level?
  • Thanks to the two different air masses, I climbed about 400 m over the cloud base until 3300 m.
  • The night was clear, with a cloud base of 360 metres and visibility of 10 kilometres.
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