cumulonimbus
cumulonimbus — noun
1. A very tall, dark cloud that rises high into the sky and brings storms with heav
A very tall, dark cloud that rises high into the sky and brings storms with heavy rain, thunder, lightning, or hail.
A large cumulonimbus cloud formed over the plain, bringing heavy rain.
collocation: cumulonimbus + formed over [place]
The pilot flew the plane around the tall cumulonimbus to avoid rough weather.
Dark cumulonimbus clouds filled the sky before the thunderstorm began.
Photographers often capture images of cumulonimbus clouds at sunset from hilltops.
When warm, wet air rises quickly, a cumulonimbus cloud can grow very tall.
- thundercloud
more general, everyday term; less precise scientifically
- storm cloud
even broader; can refer to any dark cloud that brings storms
- anvil cloud
describes the flat-topped shape of a mature cumulonimbus
- cirrus
a thin, wispy high-altitude cloud with no rain
文法句型
cumulonimbus + cloud
cumulonimbus + [verb]
用法筆記
Often followed by 'cloud' or 'clouds' in everyday use ('a cumulonimbus cloud'). Can also stand alone as a countable noun ('A large cumulonimbus appeared on the horizon'). Common in weather forecasts and meteorological descriptions rather than everyday conversation.