Definition of cumulonimbus in English:


Syllabification: cu·mu·lo·nim·bus
Pronunciation: /ˌkyo͞omyəlōˈnimbəs

noun (plural cumulonimbi /-ˈnimbī, -bē/)

  • A cloud forming a towering mass with a flat base at fairly low altitude and often a flat top, as in thunderstorms.
    More example sentences
    • The rising air cools and produces towering cumulus and cumulonimbus clouds.
    • The rising air is associated with a region of low air pressure, towering cumulonimbus clouds and rain.
    • As air rises in a large cumulonimbus or thunderhead cloud condensation occurs and all three forms of water are present.

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Pronunciation: ˈmeɪlstrəm
a powerful whirlpool in the sea