cumulonimbus
/ˌkjuːmjəloʊˈnɪmbəs/
noun
- A type of tall, dense cloud that produces thunderstorms, heavy rain, lightning, and sometimes hail or tornadoes.
- Cumulonimbus clouds can reach heights of over 60,000 feet.
- Pilots avoid flying through cumulonimbus clouds because of the strong updrafts and turbulence.
- The sky darkened as a massive cumulonimbus cloud moved in, bringing thunder and lightning.
Synonyms