Where does “pyrocumulus” come from?

pyrocumulus (English) comes from English cumulus, from Latin cumulus, from Proto-Indo-European ku-m-olo, from Proto-Indo-European ḱewh₁- — to swell; to be strong.

pyrocumulus (English): A dense cloud associated with fire or volcanic...

Definitions

  1. A dense cloud associated with fire or volcanic...

Ancestry of “pyrocumulus”, step by step

StepLanguageWordMeaning
1EnglishcumulusA large white puffy cloud that develops through...
2Latincumulusheap, pile; surplus; summit
3Proto-Indo-Europeanku-m-olo—
4Proto-Indo-Europeanḱewh₁-to swell; to be strong
Every word from Proto-Indo-European ḱewh₁- →Every word from Proto-Indo-European ku-m-olo →Every word from Latin cumulus →