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# cumulonimbus

noun (a cumulonimbus, cumulonimbus clouds; plural cumulonimbi or cumulonimbuses)

«cumulonimbus» in the English dictionary: everyday — its meanings, how the lessons use it, and examples, each with its tree on Mova.

## Everyday

1. A cumulonimbus is a very tall, heavy, dark cloud that brings thunderstorms, heavy rain, hail or lightning. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#m1)
2. It is the biggest kind of cloud and can have a flat top shaped like an anvil. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#m2)

### In the lessons

In geography and science lessons on the weather, cumulonimbus is one of the main cloud types; seeing it means a storm may be coming. In safety lessons, when thunder clouds come, get indoors and away from tall trees and water. The name comes from Latin: cumulus (heap) + nimbus (rain cloud).

### Examples

- A huge cumulonimbus cloud filled the sky. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x1)
- Cumulonimbus clouds bring thunder and lightning. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x2)
- The top of a cumulonimbus is shaped like an anvil. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x3)
- We went inside when we saw the cumulonimbus coming. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x4)
- Hail falls from cumulonimbus clouds. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x5)
- Label the cumulonimbus on your cloud chart. [tree →](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/#x6)

### Note

A science word; plural cumulonimbi or cumulonimbus clouds. Different from cumulus (fluffy fair-weather clouds) and cirrus (thin high wispy clouds). Myth: lightning never strikes the same place twice — it can.

## On Mova

- [Trees and pragmatics of «cumulonimbus» in the school dictionary](https://mova.elamur.ai/free/en/corpora/dictionaries/school/C/cumulonimbus/): every meaning and example parsed by Mova, with its dependency tree and frames.
- [«cumulonimbus» in the school dictionary](https://mova.elamur.ai/free/en/dictionaries/school/w/cumulonimbus.html) on Mova free.