Definition of cloud base in English:
The level or altitude of the lowest part of a general mass of clouds.
- 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.
Definition of cloud base in:
- British & World English dictionary