An extremely dense, vertically developed cumulus with a low dark base and fluffy masses that extend to great heights, usually producing heavy rains, thunderstorms, or hailstorms.
The type of dense cloud that develops vertically through all cloud levels, consisting of water droplets, ice crystals, and sometimes hail, and associated with thunder, lightning, and heavy showers.
An extremely dense, vertically developed cloud with a low, dark base and fluffy masses that tower to great heights. Cumulonimbus clouds usually produce heavy rains, thunderstorms, or hailstorms.
Alternative Form of cumulonimbus - cumulo-nimbus
Other Word Forms