Definition of nuée ardente in English:

nuée ardente

noun

Geology
  • An incandescent cloud of gas, ash, and lava fragments ejected from a volcano, typically as part of a pyroclastic flow.

    • ‘Sometimes hot ash emerging from a volcanic vent rushes in a hot cloud called a nuée ardente down the side of the volcano.’

Origin

French, literally burning cloud.

Pronunciation:

nuée ardente

/ˌn(y)o͞oā ärˈdänt/